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ME Esthetician practice questions

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Question 1Infection Control and Safety Practices

In Maine esthetics practice, disinfection differs from sterilization mainly because disinfection:

  1. kills all microorganisms including spores and prions on implements
  2. destroys most pathogenic organisms on surfaces but not necessarily bacterial spores Correct answer.
  3. removes visible debris and soil from a surface using soap and water
  4. is only required for single-use items that are discarded after one client

Explanation

Disinfection reduces or destroys most pathogenic microorganisms on nonporous surfaces and implements but does not reliably eliminate bacterial spores. Sterilization is the stronger process that destroys all microbial life, including spores. Cleaning removes debris and must precede disinfection.

Question 2Infection Control and Safety Practices

A Maine esthetician finishes a facial and must handle linens and towels used on the client. The correct practice is to:

  1. shake used linens over the treatment floor to release loose debris
  2. reuse a towel on the next client if it appears dry and unsoiled
  3. fold used linens and place them on the clean supply shelf for later sorting
  4. store used linens in a closed container away from clean supplies until laundered Correct answer.

Explanation

Soil ed linens are potential vehicles for pathogens and must be handled so they do not contaminate clean supplies or the environment. They should be kept in a closed, labeled container away from clean storage until laundered. Shaking disperses organisms into the air.

Question 3Infection Control and Safety Practices

Which action best demonstrates proper hand hygiene before beginning a skin care service?

  1. Wiping hands on a clean towel used earlier for the previous client
  2. Rinsing hands briefly in cool water and drying them on the uniform
  3. Applying hand sanitizer over visible product residue on the hands
  4. Washing with soap and warm water for at least 20 seconds, then drying with a clean paper towel Correct answer.

Explanation

Hand washing with soap and warm water for at least 20 seconds, followed by drying with a clean paper towel, physically removes transient microorganisms. Sanitizer does not work well on visibly soiled hands. Towels previously used on another client are contaminated.

Question 4Infection Control and Safety Practices

The term used for a disease-causing microorganism is:

  1. biofilm
  2. pathogen Correct answer.
  3. spore
  4. commensal

Explanation

A pathogen is any microorganism capable of causing disease in a susceptible host. Commensals are normal flora that generally do not cause harm, spores are resistant resting forms, and biofilms are surface-associated communities.

Question 5Infection Control and Safety Practices

Which item used during a facial is classified as porous and therefore cannot be adequately disinfected for reuse?

  1. Hard plastic spatula
  2. Glass mixing dish
  3. Cotton muslin cloth used to remove cleanser Correct answer.
  4. Stainless steel spatula

Explanation

Porous materials such as cloth absorb liquids and cannot be reliably disinfected because disinfectants cannot penetrate the fibers. Such items must be laundered or discarded after use. Glass, stainless steel, and hard plastic are nonporous and can be cleaned and disinfected.

Question 6Infection Control and Safety Practices

An esthetician notices a small cut on her finger before a service. The most appropriate first step is to:

  1. cover the cut with a waterproof bandage and then wear gloves during the service Correct answer.
  2. proceed without covering it because gloves will be worn anyway
  3. apply lotion to the cut and continue with bare hands
  4. clean the cut with product toner and begin the service immediately

Explanation

Open lesions on the esthetician's hands can harbor and transmit organisms and must be covered with a waterproof dressing before gloves are donned. Gloves alone do not seal a wound from contamination. Toner and lotion are not wound-care products.

Question 7Infection Control and Safety Practices

In Maine, the agency responsible for licensing estheticians and enforcing salon sanitation rules is the:

  1. Maine Center for Disease Control and Prevention
  2. State Board of Barbering and Cosmetology Correct answer.
  3. Department of Environmental Protection
  4. Occupational Safety and Health Administration

Explanation

Esthetician licensure and salon sanitation enforcement fall under the state licensing board for barbering and cosmetology. The Maine CDC addresses public health and reportable diseases, OSHA addresses workplace safety, and the DEP addresses environmental regulation.

Question 8Infection Control and Safety Practices

Universal precautions require the esthetician to treat which body fluids as potentially infectious?

  1. Only fluids from clients who disclose an infectious disease
  2. Only blood that is visibly present
  3. Only saliva and respiratory secretions
  4. All blood and body fluids, regardless of the client's known health status Correct answer.

Explanation

Universal precautions treat all blood and body fluids as potentially infectious because a client's health status may be unknown or undisclosed. Visible blood is not the only risk, and disclosure cannot be relied upon.

Question 9Infection Control and Safety Practices

An esthetician uses an EPA-registered hospital disinfectant on a hard plastic spatula. According to the label, the spatula must remain wet with the product for the full contact time because:

  1. the label time is only a recommendation for heavily soiled items
  2. the product dries faster on plastic than on metal
  3. the labeled contact time is required for the product to achieve its stated kill claims Correct answer.
  4. longer exposure makes the spatula easier to handle

Explanation

Disinfectant efficacy depends on the labeled contact time, which is the wet time needed to achieve the product's kill claims. Wiping the product off early shortens exposure and reduces effectiveness. The label time applies to properly cleaned items, not only heavily soiled ones.

Question 10Infection Control and Safety Practices

A client arrives with an inflamed, weeping skin lesion on the face. The esthetician should:

  1. decline the service and refer the client to a physician Correct answer.
  2. perform the service but avoid the lesion
  3. apply a disinfectant to the lesion and proceed
  4. double-glove and complete the full facial

Explanation

Weeping or inflamed lesions may indicate a contagious or medically significant condition that is a contraindication for esthetic services. The esthetician should decline and refer the client for medical evaluation. Disinfectants are not for use on skin lesions.

Question 11Infection Control and Safety Practices

Which practice correctly prevents cross-contamination when extracting comedones?

  1. Storing the extractor in a drawer with used linens
  2. Reusing the same extractor for several clients after a quick alcohol wipe
  3. Using a clean, disinfected extractor for each client and wiping it between uses on the same client Correct answer.
  4. Wiping the extractor on the uniform between extractions

Explanation

Implements that contact skin and sebum must be cleaned and disinfected between clients, and wiping during use limits transfer of organisms. Wiping on the uniform or storing with soiled linens recontaminates the tool. A quick alcohol wipe does not substitute for cleaning and a labeled contact time.

Question 12Infection Control and Safety Practices

An esthetician is preparing a disinfectant solution from concentrate. Which action follows label directions?

  1. Using the solution for several weeks regardless of the mixing date
  2. Mixing the solution in an unlabeled spray bottle for convenience
  3. Adding extra concentrate to make the solution stronger
  4. Measuring concentrate and water at the label dilution and labeling the container with contents and date Correct answer.

Explanation

Disinfectants must be diluted exactly as labeled, and the working container must be labeled with contents and date to ensure it is used within its effective life. Over-concentration, unlabeled containers, and indefinite storage are unsafe and can reduce efficacy.

Question 13Infection Control and Safety Practices

Which situation requires the esthetician to wear gloves during a service?

  1. Contact with a client's non-intact skin or blood Correct answer.
  2. Adjusting the treatment lamp
  3. Applying moisturizer to intact skin with clean hands
  4. Handing the client a clean towel

Explanation

Gloves are required when contact with blood, body fluids, or non-intact skin is anticipated, consistent with standard precautions. Routine contact with intact skin or clean equipment does not require gloves.

Question 14Infection Control and Safety Practices

The primary reason estheticians must not share personal items such as lip balm, makeup testers, or tweezers with clients is that:

  1. shared items lose their color and texture
  2. shared items can transmit pathogens directly from one person to another Correct answer.
  3. sharing causes products to expire more quickly
  4. product labels prohibit sharing for marketing reasons

Explanation

Items contacting skin or mucous membranes can carry pathogens and transmit infection between people when shared. Expiration, color, and marketing concerns are secondary to infection control.

Question 15Infection Control and Safety Practices

An esthetician is exposed to a splash of a client's blood in the eye. The correct immediate action is to:

  1. apply a disinfectant wipe to the eyelid
  2. flush the eye with water at an eyewash station for the recommended time and report the exposure Correct answer.
  3. wait until the end of the day to report the exposure
  4. rub the eye to remove the fluid and continue the service

Explanation

Eye exposures require immediate flushing at an eyewash station for the recommended duration, followed by reporting per the facility's exposure control plan. Rubbing or applying disinfectant worsens injury, and delayed reporting is not acceptable.

Question 16Infection Control and Safety Practices

Under OSHA's Bloodborne Pathogens Standard, an esthetician with reasonably anticipated exposure to blood must be offered:

  1. hepatitis B vaccination at no cost to the employee Correct answer.
  2. a hearing conservation program
  3. a respirator fit test
  4. annual tuberculosis skin testing

Explanation

The Bloodborne Pathogens Standard requires employers to offer hepatitis B vaccination free of charge to employees with reasonably anticipated occupational exposure. Tuberculosis testing, respirator fit testing, and hearing conservation fall under other programs.

Question 17Infection Control and Safety Practices

Which statement accurately describes a client with a communicable disease such as an active cold sore?

  1. Services should be postponed until the lesion has resolved because the condition can be transmitted by contact Correct answer.
  2. The condition poses no risk because it is not transmitted by skin contact
  3. The client may be served if the esthetician wears gloves and avoids the area
  4. Disinfection of the treatment room is unnecessary after the client leaves

Explanation

Active herpes simplex lesions are contagious and contact with the area can transmit the virus, so esthetic services should be postponed until resolution. Gloves do not eliminate the risk of serving an active lesion, and the room still requires routine cleaning and disinfection.

Question 18Infection Control and Safety Practices

A pedicure-style foot bath is used in an esthetician's treatment room. The correct sanitation approach is to:

  1. use the same water for multiple clients to conserve resources
  2. rinse the basin with warm water and dry it with a towel between clients
  3. clean the basin, apply a disinfectant at the labeled dilution, and allow the full contact time after each client Correct answer.
  4. spray the basin with air freshener between clients

Explanation

Whirlpool basins and similar equipment must be cleaned of debris, then treated with a disinfectant at the labeled dilution for the full contact time after each client. Rinsing alone does not disinfect, and shared water spreads organisms.

Question 19Infection Control and Safety Practices

Which statement about biofilms on surfaces such as mixing bowls and spatulas is accurate?

  1. Biofilms protect microorganisms and make them harder to kill, so mechanical cleaning before disinfection is essential Correct answer.
  2. Biofilms are eliminated by a quick water rinse
  3. Biofilms form only on porous surfaces
  4. Biofilms are harmless films that do not affect disinfection

Explanation

Biofilms are communities of microorganisms attached to surfaces that resist disinfectants, so thorough cleaning to remove the film must precede disinfection. They form on nonporous surfaces as well, and a water rinse is insufficient.

Question 20Infection Control and Safety Practices

An esthetician notices that a disinfectant container has no label and the original concentrate bottle is empty. The safest action is to:

  1. sniff the solution to identify it and use it if it smells like disinfectant
  2. assume it is the same product used last week and proceed
  3. discard the unlabeled solution and prepare a fresh, properly labeled batch from a new concentrate Correct answer.
  4. use the solution at half strength to be safe

Explanation

Unlabeled chemicals cannot be safely identified and must be discarded per local hazardous waste guidance, then replaced with a properly labeled fresh batch. Smelling, diluting arbitrarily, or assuming identity risks exposure and ineffective disinfection.

Question 21Infection Control and Safety Practices

An esthetician is deciding how to reprocess a metal comedone extractor and a glass mixing bowl between clients. The correct sequence is:

  1. soak in water until the end of the day, then clean once
  2. clean with soap and water, rinse, dry, then apply disinfectant for the labeled contact time Correct answer.
  3. apply disinfectant first, then rinse with soap
  4. wipe with a dry paper towel and store in a closed drawer

Explanation

The standard sequence is cleaning to remove debris, rinsing and drying, then disinfection for the full labeled contact time. Disinfectant applied over soil is inactivated, and a dry wipe or water soak does not disinfect.

Question 22Infection Control and Safety Practices

A client reports a known allergy to a specific disinfectant. What is the most appropriate response regarding the treatment room and implements?

  1. Skip disinfection for the client's implements to avoid triggering the allergy
  2. Rinse the implements with water only instead of disinfecting
  3. Use an alternative EPA-registered disinfectant with the appropriate kill claims and note it in the client record Correct answer.
  4. Use the original disinfectant but open a window

Explanation

When a client has a documented allergy, an alternative EPA-registered disinfectant with the required kill claims should be used and documented. Skipping disinfection or using water alone creates an infection control failure, and ventilation does not resolve the allergy.

Question 23Infection Control and Safety Practices

An esthetician's gloves tear during a service involving a client with a bleeding lesion. The correct action is to:

  1. remove the glove and finish the service with bare hands
  2. apply hand sanitizer over the torn glove and continue
  3. stop, remove the torn glove, wash hands, don new gloves, and assess for exposure Correct answer.
  4. continue the service and tape the tear

Explanation

A torn glove must be replaced immediately after removing it, washing hands, and donning new gloves; the exposure should then be assessed and reported per the exposure control plan. Continuing with a torn glove or bare hands exposes both parties.

Question 24Infection Control and Safety Practices

Which statement about single-use items such as lancets and disposable applicators is correct?

  1. They must be discarded after one use and cannot be disinfected for reuse Correct answer.
  2. They may be reused if stored in disinfectant
  3. They may be reused for the same client later in the day
  4. They may be reused if cleaned with soap and water

Explanation

Single-use items are designed and labeled for one use and cannot be reliably cleaned and disinfected for reuse. Reusing them risks transmission of bloodborne pathogens and violates manufacturer instructions.

Question 25Infection Control and Safety Practices

An esthetician is setting up a station and needs to know which surface is considered a high-touch area requiring frequent disinfection.

  1. The ceiling light fixture
  2. The treatment table surface and client chair armrests Correct answer.
  3. The inside of a closed supply cabinet
  4. The floor beneath the reception desk

Explanation

High-touch surfaces such as treatment tables and chair armrests contact skin and hands frequently and require regular cleaning and disinfection. Ceilings, closed cabinet interiors, and distant floors are not high-touch areas in the treatment space.

Question 26Infection Control and Safety Practices

An esthetician finishes a facial and must handle a towel soiled with massage oil and skin debris. According to Maine salon sanitation rules, this towel is classified as:

  1. Hazardous waste requiring incineration
  2. A single-use item that must be discarded
  3. Regulated medical waste placed in a red biohazard bag
  4. Soiled linen that must be laundered before reuse Correct answer.

Explanation

Towels, linens, and similar cloth items that contact intact skin are soiled linens; they may be laundered and reused but must never be reused between clients without laundering. They are not regulated medical waste unless saturated with blood or other potentially infectious material.

Question 27Infection Control and Safety Practices

Before beginning a chemical peel service, the esthetician checks that a fire extinguisher is present and accessible in the treatment area. This precaution is most directly related to which safety concern?

  1. Limiting exposure to airborne pathogens
  2. Preventing slips on wet flooring
  3. Reducing the risk of electrical shock
  4. Controlling flammable product hazards Correct answer.

Explanation

Many peel solutions and astringents contain alcohols or other flammable solvents, so an accessible fire extinguisher and safe storage away from ignition sources are core fire-safety measures. Slip, electrical, and airborne hazards are managed by different controls.

Question 28Infection Control and Safety Practices

An esthetician is about to perform a service on a client who has a rash on the neck that the esthetician suspects is a fungal infection. What is the most appropriate course of action?

  1. Double the disinfectant strength used on tools afterward
  2. Apply a stronger exfoliant to the affected area
  3. Discontinue the service and refer the client to a physician Correct answer.
  4. Proceed with the service while avoiding the rash area

Explanation

A suspected infectious skin condition is a contraindication; the esthetician should not treat the area and should refer the client for medical evaluation. Working around the lesion or intensifying product use risks spreading infection and worsening the condition.

Question 29Infection Control and Safety Practices

After a waxing service, an esthetician must reprocess the treatment table surface, which is covered with a plastic sheet. Which step order correctly reflects the standard cleaning and disinfection process?

  1. Disinfect first, then wipe away visible wax residue
  2. Spray disinfectant and immediately wipe dry with a towel
  3. Clean with soap and water, then apply disinfectant for the label contact time Correct answer.
  4. Rinse with water only, since the plastic sheet is a barrier

Explanation

Surfaces must first be cleaned of visible debris because organic matter interferes with disinfectant efficacy, then an EPA-registered disinfectant is applied for the full label contact time. Skipping cleaning or shortening contact time leaves pathogens viable.

Question 30Infection Control and Safety Practices

An esthetician is reviewing the salon's written exposure control plan. Which element is required under OSHA's Bloodborne Pathogens Standard for a workplace with reasonably anticipated exposure to blood?

  1. A signed waiver from each client acknowledging infection risk
  2. A schedule of implementation for methods of exposure control, including universal precautions and housekeeping Correct answer.
  3. Monthly inspection reports filed with the state licensing board
  4. Annual tuberculosis skin testing for all staff

Explanation

The Bloodborne Pathogens Standard requires a written exposure control plan that includes a schedule for implementing exposure control methods, such as universal precautions, engineering controls, and housekeeping procedures. Tuberculosis testing, state filings, and client waivers are not elements of that plan.

Question 31Anatomy and Physiology of the Skin

Which layer of the skin contains keratinocytes that undergo mitosis to continuously renew the epidermis?

  1. Stratum basale Correct answer.
  2. Stratum lucidum
  3. Stratum corneum
  4. Stratum granulosum

Explanation

The stratum basale is the deepest epidermal layer, a single row of columnar cells resting on the basement membrane. Its keratinocytes divide by mitosis, and daughter cells migrate upward and differentiate into the upper layers, so it is the source of epidermal renewal.

Question 32Anatomy and Physiology of the Skin

A client has a wound that has penetrated the dermis. Which statement best describes why this matters for an esthetician?

  1. Dermal injury is harmless because the dermis contains no blood vessels or nerves
  2. Dermal injury may produce scarring because collagen and elastin architecture is disrupted Correct answer.
  3. Dermal wounds never affect the skin barrier because the epidermis remains intact
  4. Dermal wounds heal without any fibroblast activity because keratinocytes rebuild collagen

Explanation

The dermis holds the collagen and elastin framework that gives skin strength and recoil, plus vessels, nerves, and glands. When it is disrupted, repair involves fibroblast-produced scar collagen, which can leave a permanent textural change, so dermal depth is a key contraindication consideration.

Question 33Anatomy and Physiology of the Skin

Melanin is produced by which cells, and in which layer do they primarily reside?

  1. Melanocytes in the stratum basale Correct answer.
  2. Langerhans cells in the stratum granulosum
  3. Fibroblasts in the papillary dermis
  4. Keratinocytes in the stratum spinosum

Explanation

Melanocytes are pigment-producing cells located along the stratum basale, where they synthesize melanin in melanosomes and transfer it to neighboring keratinocytes. This melanin absorbs ultraviolet radiation and helps protect nuclear DNA.

Question 34Anatomy and Physiology of the Skin

The acid mantle of the skin is best described as which of the following?

  1. An alkaline secretion from eccrine glands that neutralizes bacteria
  2. A neutral lipid layer that forms only after exfoliation
  3. A layer of dead cells that contains no water or lipids
  4. A slightly acidic film of sebum and sweat that supports barrier function and limits microbial growth Correct answer.

Explanation

The acid mantle is a thin, slightly acidic emulsion of sebum, sweat, and epidermal lipids on the skin surface, typically reported around pH 4.5 to 5.5. Its acidity supports the barrier, favors normal flora, and inhibits many pathogens, which is why harsh alkaline products can disrupt it.

Question 35Anatomy and Physiology of the Skin

Which skin layer is described as the subcutaneous layer composed mainly of adipose tissue and loose connective tissue?

  1. Stratum corneum
  2. Hypodermis Correct answer.
  3. Papillary dermis
  4. Basement membrane

Explanation

The hypodermis, also called the subcutaneous layer, lies beneath the dermis and consists largely of adipose and loose connective tissue. It cushions underlying structures, insulates the body, and stores energy, and it contains larger vessels and nerves.

Question 36Anatomy and Physiology of the Skin

Sebaceous glands are most accurately described as which type of gland, and where do they release their product?

  1. Holocrine glands that secrete sebum into hair follicles Correct answer.
  2. Apocrine glands that secrete sweat onto the skin surface
  3. Eccrine glands that secrete watery sweat directly through pores
  4. Endocrine glands that release hormones into the bloodstream

Explanation

Sebaceous glands are holocrine glands: the entire cell disintegrates to release its sebum, which empties into a hair follicle. Sebum lubricates the skin and hair and contributes to the acid mantle, and activity is strongly influenced by androgens.

Question 37Anatomy and Physiology of the Skin

Which statement correctly pairs a sensory receptor in the skin with the sensation it detects?

  1. Ruffini endings detect cold temperature
  2. Meissner corpuscles detect light touch in the papillary dermis Correct answer.
  3. Merkel cells detect deep pressure in the hypodermis
  4. Pacinian corpuscles detect light touch in the epidermis

Explanation

Meissner corpuscles are encapsulated nerve endings located in the dermal papillae, where they detect light, discriminative touch. Pacinian corpuscles detect deep pressure and vibration, Merkel cells detect sustained light touch, and Ruffini endings respond to stretch.

Question 38Anatomy and Physiology of the Skin

An esthetician is treating a client and considers the role of the arrector pili muscle. Which action does this muscle produce?

  1. It contracts to close the eccrine duct during sweating
  2. It relaxes to open the pore for extraction
  3. It contracts to raise the hair shaft, producing goosebumps Correct answer.
  4. It contracts to push sebum out of the gland onto the skin

Explanation

The arrector pili is a tiny smooth muscle attached to the hair follicle and the dermal tissue. Sympathetic stimulation, such as cold or emotion, causes it to contract and elevate the hair, creating goosebumps, and it also helps express sebum.

Question 39Anatomy and Physiology of the Skin

Which vitamin is synthesized in the skin when it is exposed to ultraviolet B radiation?

  1. Vitamin C
  2. Vitamin D Correct answer.
  3. Vitamin K
  4. Vitamin A

Explanation

Ultraviolet B radiation converts a cholesterol derivative in the skin into a vitamin D precursor, which is then activated in the liver and kidneys. This makes controlled sun exposure important for vitamin D status, though it must be balanced against photoaging and skin cancer risk.

Question 40Anatomy and Physiology of the Skin

Which statement accurately describes the difference between eccrine and apocrine sweat glands?

  1. Eccrine glands empty into hair follicles; apocrine glands open directly onto the skin surface
  2. Eccrine glands are found only in the axillae; apocrine glands are distributed over the entire body
  3. Apocrine glands cool the body through watery sweat; eccrine glands release an oily scent
  4. Eccrine glands are widely distributed and thermoregulatory; apocrine glands are localized and become active at puberty Correct answer.

Explanation

Eccrine glands are present over nearly the whole body, open directly onto the surface, and cool the body through watery sweat. Apocrine glands are concentrated in areas such as the axillae and groin, open into hair follicles, and become active around puberty.

Question 41Anatomy and Physiology of the Skin

The skin's barrier function depends most directly on which structural component?

  1. Intercellular lipid lamellae in the stratum corneum Correct answer.
  2. Collagen bundles in the reticular dermis
  3. Adipose tissue in the hypodermis
  4. Melanin granules in the basal layer

Explanation

The stratum corneum is organized as corneocytes embedded in a lipid matrix, often described as bricks and mortar. The intercellular lipid lamellae, rich in ceramides, cholesterol, and fatty acids, limit water loss and block entry of irritants and microbes.

Question 42Anatomy and Physiology of the Skin

Which cells of the epidermis are primarily responsible for immune surveillance and antigen presentation?

  1. Corneocytes
  2. Merkel cells
  3. Langerhans cells Correct answer.
  4. Melanocytes

Explanation

Langerhans cells are dendritic antigen-presenting cells residing in the epidermis. They capture antigens and migrate to lymph nodes to initiate immune responses, making them a key part of skin immunity.

Question 43Anatomy and Physiology of the Skin

A client presents with skin that feels tight and shows fine flaking after using a strong alkaline cleanser. Which physiological change best explains this presentation?

  1. Contraction of arrector pili muscles pulls the surface into flakes
  2. Disruption of the acid mantle and intercellular lipids increases transepidermal water loss Correct answer.
  3. Overproduction of sebum seals the skin and traps water
  4. Increased melanin synthesis causes the flaking appearance

Explanation

Alkaline cleansers can raise surface pH and strip intercellular lipids, weakening the barrier and allowing water to escape more readily. The result is transepidermal water loss with tightness and flaking, so gentle, pH-appropriate cleansing is advised.

Question 44Anatomy and Physiology of the Skin

Which layer of the epidermis is characterized by desmosome-linked cells with spiny projections and active keratin synthesis?

  1. Stratum corneum
  2. Stratum granulosum
  3. Stratum basale
  4. Stratum spinosum Correct answer.

Explanation

In the stratum spinosum, cells are connected by desmosomes and appear spiny when prepared for microscopy. Keratin filaments are actively synthesized here, and this layer is sometimes called the prickle cell layer.

Question 45Anatomy and Physiology of the Skin

Collagen and elastin in the dermis are produced primarily by which cells?

  1. Melanocytes
  2. Adipocytes
  3. Fibroblasts Correct answer.
  4. Keratinocytes

Explanation

Fibroblasts are the principal cells of the dermis and synthesize collagen, elastin, and ground substance. Their activity declines with age and sun exposure, contributing to reduced firmness and elasticity.

Question 46Anatomy and Physiology of the Skin

Which statement best explains why thick skin differs from thin skin?

  1. Thick skin is found only on the face and scalp
  2. Thick skin lacks sebaceous glands and contains no hair follicles anywhere on the body
  3. Thick skin has an extra stratum lucidum and a thicker stratum corneum on palms and soles Correct answer.
  4. Thin skin contains more epidermal layers than thick skin

Explanation

Thick skin covers the palms and soles and features a prominent stratum corneum plus a translucent stratum lucidum. It is also hairless, while thin skin covers most of the body and contains hair follicles and sebaceous glands.

Question 47Anatomy and Physiology of the Skin

Which function of the skin is carried out mainly by the dermal blood vessels?

  1. Synthesis of keratin for the surface barrier
  2. Secretion of sebum for lubrication
  3. Thermoregulation through vasodilation and vasoconstriction Correct answer.
  4. Production of melanin for UV protection

Explanation

Dermal blood vessels dilate to release heat and constrict to conserve it, which is central to thermoregulation. This vasomotor response works with sweating to maintain core temperature.

Question 48Anatomy and Physiology of the Skin

A client asks why a tattoo remains visible for years. Which explanation is most accurate?

  1. Pigment is deposited in the hypodermis and migrates upward each month
  2. Pigment is engulfed by dermal macrophages and remains in the dermis, which turns over slowly Correct answer.
  3. Pigment is stored inside melanocytes and continuously re-secreted
  4. Pigment stays only in the stratum corneum and is replaced every few days

Explanation

Tattoo needles deposit pigment into the dermis, where macrophages take up particles too large to be cleared easily. Because dermal tissue renews slowly compared with the epidermis, the pigment persists for years.

Question 49Anatomy and Physiology of the Skin

The basement membrane zone between the epidermis and dermis serves which primary role?

  1. It produces melanin to shield the dividing basal cells
  2. It generates sweat that hydrates the dermis
  3. It stores fat to cushion the epidermis
  4. It anchors the epidermis to the dermis and regulates exchange of nutrients and cells Correct answer.

Explanation

The basement membrane zone is a specialized interface that attaches the basal epidermis to the dermis and controls movement of nutrients, cells, and signals between them. Its integrity is essential for normal epidermal adhesion and repair.

Question 50Anatomy and Physiology of the Skin

Which change in the skin is most directly attributable to reduced estrogen after menopause?

  1. Complete cessation of eccrine sweating across the body
  2. Thinning of the epidermis and decreased collagen and moisture retention Correct answer.
  3. Replacement of the dermis by adipose tissue
  4. Permanent loss of all melanocytes leading to depigmentation

Explanation

Estrogen supports epidermal thickness, collagen synthesis, and water-holding capacity. After menopause, declining estrogen contributes to thinner skin, reduced collagen, and dryness, which affects treatment planning and product selection.