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KS Esthetician practice questions

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Question 1Infection Control, Sanitation, and Safety Practices

In Kansas, a licensed esthetician must follow the sanitation rules enforced by which state agency?

  1. Kansas Department of Health and Environment
  2. Kansas Department of Revenue
  3. Kansas Board of Cosmetology Correct answer.
  4. Kansas Department of Labor

Explanation

Kansas regulates estheticians and salon sanitation through the Kansas Board of Cosmetology, which adopts and enforces safety and infection-control rules for licensed facilities and practitioners. Other state agencies handle public health reporting, labor, or taxation, not licensure of esthetic services.

Question 2Infection Control, Sanitation, and Safety Practices

Which term describes a product or tool that has been cleaned and then treated to destroy most pathogenic organisms on it?

  1. Decontamination
  2. Disinfection Correct answer.
  3. Sanitization
  4. Sterilization

Explanation

Disinfection is the process of destroying most pathogenic microorganisms, though not necessarily bacterial spores, on a surface or implement. It is a stronger step than basic cleaning and sanitizing but falls short of sterilization, which destroys all microbial life including spores.

Question 3Infection Control, Sanitation, and Safety Practices

What is the first step before disinfecting a metal implement that was used on a client?

  1. Scrub it with soap and water to remove residue Correct answer.
  2. Wipe it with a towel and store it
  3. Place it in a sealed bag
  4. Soak it in a disinfectant solution

Explanation

Cleaning with soap and water must come first because debris, oils, and product residue shield microorganisms and prevent the disinfectant from contacting the surface. Only after thorough cleaning and drying should the implement be immersed in an EPA-registered disinfectant for the labeled contact time.

Question 4Infection Control, Sanitation, and Safety Practices

A client arrives with an active cold sore on the lip. What is the appropriate esthetician response?

  1. Reschedule the service until the lesion has healed Correct answer.
  2. Wear gloves and perform the full service
  3. Proceed with the facial but avoid the mouth area
  4. Apply a barrier cream and continue

Explanation

An active cold sore is a contagious viral lesion, and treating the area risks spreading the virus to the esthetician, the client's other skin areas, and other clients. Standard practice is to defer service until the lesion resolves, since gloves and avoidance of the mouth do not eliminate transmission risk during a facial.

Question 5Infection Control, Sanitation, and Safety Practices

Which action best demonstrates proper handwashing technique in the treatment room?

  1. Wiping hands on a clean towel after applying lotion
  2. Rinsing hands quickly with cold water between clients
  3. Using an alcohol-based hand rub alone before every service
  4. Lathering with soap and warm water for at least 20 seconds, including under nails Correct answer.

Explanation

Effective handwashing uses soap and warm running water with friction for at least 20 seconds, covering the backs of hands, between fingers, and under nails. This mechanical action lifts and rinses away transient microorganisms that hand rubs may not remove when hands are soiled.

Question 6Infection Control, Sanitation, and Safety Practices

Why should single-use items such as spatulas and cotton swabs be discarded after one client?

  1. They are too costly to disinfect
  2. They are not labeled for disinfection
  3. They lose their shape after one use
  4. They cannot be cleaned effectively and can carry organisms between clients Correct answer.

Explanation

Porous or single-use items cannot be reliably cleaned and disinfected because they trap product and microorganisms in their structure. Discarding them after a single use prevents cross-contamination between clients and is the standard for items labeled single-use.

Question 7Infection Control, Sanitation, and Safety Practices

Which of the following is a bloodborne pathogen that estheticians must guard against?

  1. Propionibacterium acnes
  2. Hepatitis B virus Correct answer.
  3. Candida albicans
  4. Staphylococcus aureus

Explanation

Hepatitis B is a bloodborne virus transmitted through contact with infected blood or body fluids, making it a key concern when a client has a cut or when an esthetician sustains a needlestick-type injury. The other listed organisms are bacteria or yeasts associated with skin conditions rather than bloodborne transmission.

Question 8Infection Control, Sanitation, and Safety Practices

What is the purpose of wearing safety goggles during a chemical peel service?

  1. To satisfy client preference
  2. To keep the esthetician's eyelashes dry
  3. To improve visibility of the treatment area
  4. To protect the eyes from splashes of acid or irritating solutions Correct answer.

Explanation

Personal protective equipment such as goggles shields mucous membranes from chemical splashes that can cause burns or infection. Eye protection is especially important with acids and other active ingredients that can splash during application or removal.

Question 9Infection Control, Sanitation, and Safety Practices

A bottle of disinfectant concentrate must be diluted before use. What should the esthetician do first?

  1. Read the manufacturer's label for the correct dilution ratio Correct answer.
  2. Mix it by eye until the color looks right
  3. Use it undiluted for stronger effect
  4. Add extra concentrate to be safe

Explanation

Disinfectants are formulated to work at a specific concentration and contact time, so the manufacturer's label must be followed for dilution and dwell time. Using too little reduces efficacy, while using too much can damage tools and create hazardous fumes.

Question 10Infection Control, Sanitation, and Safety Practices

How should a esthetician handle a linens that has been used on a client with an open, weeping lesion?

  1. Shake it out and place it in the regular laundry
  2. Fold it and store it for the client's next visit
  3. Reuse it on the next client after spraying it with disinfectant
  4. Place it in a separate, labeled bag and launder it separately with hot water Correct answer.

Explanation

Linens contaminated with blood or wound drainage must be handled as potentially infectious, bagged separately, and laundered with hot water and detergent to kill pathogens. Shaking or reusing them spreads organisms and exposes staff and other clients.

Question 11Infection Control, Sanitation, and Safety Practices

Which practice best prevents cross-contamination when using a shared container of cream?

  1. Dipping fingers directly into the jar
  2. Wiping the jar rim with a used towel
  3. Refilling the jar with leftover product from a treatment
  4. Using a clean spatula to remove product and never returning used product to the jar Correct answer.

Explanation

Removing product with a clean spatula and keeping unused product out of the original container prevents introduction of skin flora and debris. Double-dipping or returning used product contaminates the entire supply and can spread infection between clients.

Question 12Infection Control, Sanitation, and Safety Practices

After a blood exposure incident on an esthetician's hand, what is the recommended first action?

  1. Cover it with a bandage and finish the client
  2. Apply antiseptic and continue the service
  3. Rinse with hydrogen peroxide and ignore it
  4. Wash the area thoroughly with soap and water and report the exposure Correct answer.

Explanation

Immediate washing with soap and water reduces the viral or bacterial load, and the exposure must be reported per the facility's exposure-control plan so follow-up and medical evaluation can occur. Continuing the service without washing risks contaminating the treatment area and the client.

Question 13Infection Control, Sanitation, and Safety Practices

Which statement about a hospital-grade disinfectant is accurate for salon use?

  1. It must be used at the labeled concentration for the full contact time to be effective Correct answer.
  2. It can replace handwashing when hands are soiled
  3. It is effective against all organisms instantly upon contact
  4. It is safe to mix with other chemicals for stronger action

Explanation

Hospital-grade disinfectants are registered to kill specific organisms only when used at the labeled dilution and allowed to remain wet for the full contact time. Shortening contact time or mixing products can reduce efficacy and create dangerous chemical reactions.

Question 14Infection Control, Sanitation, and Safety Practices

What is the correct way to store disinfected implements between clients?

  1. In a cloth pouch used for soiled tools
  2. Loose in a pocket
  3. In a closed, clean container or drawer Correct answer.
  4. In a solution of soapy water

Explanation

Disinfected implements should be kept in a clean, closed container or drawer to protect them from dust and airborne organisms until use. Storing them with soiled items or in soapy water recontaminates them and defeats the disinfection process.

Question 15Infection Control, Sanitation, and Safety Practices

An esthetician notices a cracked, discolored spatula in the tool kit. What is the best action?

  1. Soak it longer in disinfectant and keep using it
  2. Discard it because cracks harbor organisms and cannot be cleaned Correct answer.
  3. Continue using it because it is only cosmetic
  4. Glue the crack and return it to service

Explanation

Cracks and pits create reservoirs where debris and microorganisms survive cleaning, making disinfection unreliable. Implements with damaged surfaces must be discarded and replaced to maintain infection control.

Question 16Infection Control, Sanitation, and Safety Practices

Which action is appropriate when a client reports a known allergy to a product ingredient?

  1. Apply the product only to a small area without asking
  2. Proceed and monitor for a reaction
  3. Patch test or substitute a product without that ingredient before the service Correct answer.
  4. Double the dilution to reduce the allergen

Explanation

Documented allergies require avoiding the allergen entirely, which may mean selecting an alternative product or performing a patch test when appropriate. Proceeding with a known allergen risks a severe reaction that could require emergency care.

Question 17Infection Control, Sanitation, and Safety Practices

Why does the esthetician avoid using the same wax applicator on multiple clients?

  1. The applicator can transfer skin cells and organisms into the wax pot Correct answer.
  2. Shared sticks are too expensive
  3. Wax pots are self-sterilizing
  4. Wax cools too quickly on a shared stick

Explanation

Reusing an applicator dips skin cells, hair, and potential pathogens back into the wax, contaminating the supply for subsequent clients. Using a fresh applicator per client and never double-dipping prevents cross-contamination.

Question 18Infection Control, Sanitation, and Safety Practices

A client with a compromised immune system requests a facial. How should the esthetician respond?

  1. Perform the service with extra gloves
  2. Recommend postponing and consult the client's physician before proceeding Correct answer.
  3. Use stronger exfoliation to boost immunity
  4. Skip disinfection to save time

Explanation

Immunocompromised clients face elevated risk of infection from treatments that disrupt the skin barrier, so the esthetician should defer service and encourage medical consultation. Extra gloves or aggressive exfoliation do not eliminate the underlying risk.

Question 19Infection Control, Sanitation, and Safety Practices

What is the correct procedure for disinfecting a nonporous treatment table between clients?

  1. Spray with disinfectant and immediately wipe dry
  2. Cover it with a fresh sheet and skip disinfection
  3. Clean the surface, then apply an EPA-registered disinfectant and allow the labeled contact time Correct answer.
  4. Wipe with a dry cloth only

Explanation

The table must be cleaned of oils and debris, then treated with an EPA-registered disinfectant and left wet for the full contact time specified on the label. Wiping immediately or relying on a sheet alone leaves organisms on the surface.

Question 20Infection Control, Sanitation, and Safety Practices

Which scenario most clearly requires the esthetician to wear gloves?

  1. Working near a client's open cut or rash Correct answer.
  2. Consulting with a client at the front desk
  3. Applying moisturizer to intact skin
  4. Filing a client's nails with a disposable file

Explanation

Gloves are required whenever contact with blood, body fluids, or non-intact skin is likely, such as working near an open cut or rash. Routine contact with intact skin or administrative tasks does not call for gloves.

Question 21Infection Control, Sanitation, and Safety Practices

An esthetician is exposed to a chemical splash in the eye. What is the priority action?

  1. Flush the eye with clean water for at least 15 minutes and seek medical attention Correct answer.
  2. Apply eye drops and resume work
  3. Wait to see if irritation develops
  4. Rub the eye to remove the chemical

Explanation

Chemical eye splashes require immediate irrigation with clean water for at least 15 minutes to dilute and remove the substance, followed by medical evaluation. Rubbing or delaying treatment can worsen injury to the cornea.

Question 22Infection Control, Sanitation, and Safety Practices

A salon uses an autoclave for metal tools. Which statement best describes its role in infection control?

  1. It sanitizes tools to a safe level but not beyond
  2. It replaces the need for handwashing
  3. It sterilizes tools by destroying all microorganisms, including spores Correct answer.
  4. It only cleans visible debris from tools

Explanation

An autoclave uses pressurized steam to sterilize implements, destroying all microorganisms including bacterial spores. Sterilization is the highest level of decontamination and goes beyond cleaning or sanitizing, though it does not substitute for hand hygiene.

Question 23Infection Control, Sanitation, and Safety Practices

An esthetician must choose between two disinfectants for tools contaminated with blood. Which factor is most important in the selection?

  1. The scent of the product
  2. The label's claims for bloodborne pathogen efficacy and required contact time Correct answer.
  3. The price per gallon
  4. The color of the solution

Explanation

When bloodborne pathogens are a concern, the disinfectant must be labeled as effective against them and used for the specified contact time to ensure adequate kill. Color, cost, and fragrance do not determine efficacy against viruses such as hepatitis B.

Question 24Infection Control, Sanitation, and Safety Practices

A client's skin reacts with hives and shortness of breath during a treatment. What is the esthetician's immediate priority?

  1. Finish the service quickly
  2. Stop the service, remove the product, and seek emergency medical help Correct answer.
  3. Apply a soothing mask
  4. Document the reaction and continue

Explanation

Hives with shortness of breath suggest a systemic allergic reaction that can progress to anaphylaxis, so the service must stop immediately, the product removed, and emergency care summoned. Continuing or applying another product risks worsening the reaction.

Question 25Infection Control, Sanitation, and Safety Practices

Which practice best reflects the principle of standard precautions in an esthetician's daily work?

  1. Treating all blood and body fluids as potentially infectious regardless of disclosure Correct answer.
  2. Wearing gloves only when a client discloses an infection
  3. Asking clients to sign a waiver instead of sanitizing
  4. Disinfecting tools only at the end of the day

Explanation

Standard precautions require treating all blood and body fluids as potentially infectious because clients may not know or disclose their status. Consistent glove use, hand hygiene, and disinfection for every client are therefore the foundation of infection control.

Question 26Infection Control, Sanitation, and Safety Practices

Under Kansas salon rules, how is a "hospital-grade disinfectant" best described for esthetic implement care?

  1. A bleach solution mixed by eye until it smells strongly of chlorine
  2. A product registered with the EPA as a hospital disinfectant and used at its labeled dilution and contact time Correct answer.
  3. A UV light cabinet that is switched on for ten minutes after each client
  4. Any antibacterial soap that lists a bacteria kill rate on the front label

Explanation

Hospital-grade means the product carries an EPA hospital-disinfectant registration and is mixed and timed exactly as the label instructs. The kill claim only holds at the labeled dilution and contact time, so improvised bleach or a UV cabinet does not meet the standard.

Question 27Infection Control, Sanitation, and Safety Practices

An esthetician finishes a manicure-free facial and must clean the work area. Which sequence reflects correct infection control order?

  1. Disinfect the surface, then wash hands, then discard single-use items
  2. Discard single-use items, disinfect the surface, then wash hands Correct answer.
  3. Wash hands, discard single-use items, then disinfect the surface
  4. Discard single-use items, wash hands, then clean and disinfect the surface

Explanation

Contaminated disposables are removed first so they do not recontaminate a clean surface, then the surface is cleaned and disinfected, and hands are washed last because they touched soiled items. Handwashing after handling waste is the final protective step.

Question 28Infection Control, Sanitation, and Safety Practices

A client arrives with a fresh, bleeding nick on the chin from shaving. What is the most appropriate esthetician response?

  1. Proceed with the facial but avoid the chin area entirely
  2. Postpone the service until the lesion has healed and is no longer weeping Correct answer.
  3. Apply pressure with a reusable towel, then continue the service
  4. Cover the area with a decorative bandage and treat over it

Explanation

A fresh, bleeding lesion is a break in the skin that raises the risk of bloodborne pathogen transmission for both parties. Services should be deferred until the skin is intact rather than worked around or covered.

Question 29Infection Control, Sanitation, and Safety Practices

Which practice reflects proper handling of clean versus soiled linens in an esthetician's treatment room?

  1. Used linens folded and stacked on the clean linen shelf until laundry day
  2. Clean and used linens kept together but separated by a folded towel
  3. Used linens shaken out over the treatment table before being placed in a bag
  4. Clean linens stored in a closed cabinet apart from a separate hamper for used linens Correct answer.

Explanation

Clean and soiled linens must be kept physically separate, with clean items in a closed storage area and used items going directly into a designated hamper. Shaking or stacking used linens near clean supplies spreads contamination.

Question 30Infection Control, Sanitation, and Safety Practices

An esthetician develops a rash on both hands and wants to keep working. Which approach best balances infection control with occupational safety?

  1. Wear the same pair of gloves for the entire shift and change them only when visibly soiled
  2. Skip handwashing because the rash makes soap painful, and use gloves instead
  3. Continue bare-handed work and rely on frequent alcohol rubs between clients
  4. Stop performing services until evaluated, and use gloves plus a barrier cream only if a clinician clears the skin Correct answer.

Explanation

Broken or inflamed skin on the hands increases both the esthetician's risk of acquiring infection and the risk of transmitting organisms to clients. A clinician should evaluate the rash before services resume, and gloves do not replace handwashing.

Question 31Anatomy and Physiology of the Skin

Which layer of the skin contains keratinocytes that are actively dividing and pushing older cells toward the surface?

  1. Papillary dermis
  2. Stratum lucidum
  3. Stratum basale Correct answer.
  4. Stratum corneum

Explanation

The stratum basale is the deepest layer of the epidermis and is the site of mitotic activity, producing new keratinocytes that migrate upward as they mature. The layers above it consist of progressively more differentiated, less mitotic cells.

Question 32Anatomy and Physiology of the Skin

A client's skin tans after sun exposure. Which cell type is primarily responsible for producing the pigment involved?

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

Explanation

Melanocytes reside in the stratum basale and synthesize melanin, which is transferred to surrounding keratinocytes to shield their nuclei from UV damage. Increased melanin production is what visibly darkens the skin after exposure.

Question 33Anatomy and Physiology of the Skin

Which structure anchors the epidermis to the dermis and is affected in blistering disorders?

  1. Subcutaneous fat
  2. Sebaceous gland
  3. Arrector pili muscle
  4. Basement membrane zone Correct answer.

Explanation

The basement membrane zone is the junctional region between the epidermis and dermis, containing adhesion proteins that hold the two layers together. When these attachments fail, fluid separates the layers and a blister forms.

Question 34Anatomy and Physiology of the Skin

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

  1. Vitamin D Correct answer.
  2. Vitamin K
  3. Vitamin C
  4. Vitamin B12

Explanation

UVB radiation converts 7-dehydrocholesterol in the epidermis into a vitamin D precursor that is later activated in the liver and kidneys. This makes the skin a key site of vitamin D synthesis.

Question 35Anatomy and Physiology of the Skin

Which type of collagen is the most abundant in the dermis and provides tensile strength to the skin?

  1. Type III
  2. Type IV
  3. Type I Correct answer.
  4. Type VII

Explanation

Type I collagen is the dominant collagen of the dermis, forming thick bundles that give skin its tensile strength and resistance to stretching. Type III is present in smaller amounts in adult skin, while types IV and VII are components of the basement membrane zone.

Question 36Anatomy and Physiology of the Skin

A client has a wound that heals with minimal scarring and rapid re-epithelialization. Which epidermal process best explains the restoration of the surface?

  1. Deposition of melanin over the wound
  2. Migration and proliferation of keratinocytes from wound edges and appendages Correct answer.
  3. Contraction of arrector pili muscles
  4. Proliferation of dermal fibroblasts across the wound bed

Explanation

Epidermal repair occurs mainly through keratinocyte migration from the wound margins and from hair follicle and gland epithelium, followed by proliferation to restore the barrier. This re-epithelialization is what closes the surface with little scarring.

Question 37Anatomy and Physiology of the Skin

Which layer of the epidermis is composed of flattened cells with keratohyalin granules and is often described as the transition zone to the outer barrier?

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

Explanation

The stratum granulosum contains keratinocytes with visible keratohyalin granules and lamellar bodies that release lipids, forming the water barrier as cells prepare to die and flatten. It marks the transition between the nucleated epidermis and the anucleate cornified layer.

Question 38Anatomy and Physiology of the Skin

Which skin layer contains the hair follicles, sebaceous glands, and sweat glands?

  1. Stratum corneum
  2. Hypodermis
  3. Epidermis
  4. Dermis Correct answer.

Explanation

The dermis houses the appendages of the skin, including hair follicles, sebaceous glands, eccrine and apocrine sweat glands, and blood vessels. These structures extend into or through the dermis to reach the surface.

Question 39Anatomy and Physiology of the Skin

Which sensory receptor in the skin is responsible for detecting light touch and is concentrated in the dermal papillae of hairless skin?

  1. Meissner corpuscle Correct answer.
  2. Free nerve ending
  3. Pacinian corpuscle
  4. Ruffini ending

Explanation

Meissner corpuscles are encapsulated mechanoreceptors located in the dermal papillae, especially of the fingertips and lips, and respond to light touch and low-frequency vibration. Their superficial position suits them to fine tactile discrimination.

Question 40Anatomy and Physiology of the Skin

A client with very fair skin and light eyes reports burning easily. Which factor most directly explains this reduced tolerance to UV exposure?

  1. Thinner subcutaneous fat layer
  2. Reduced number of sweat glands
  3. Lower melanin production and transfer to keratinocytes Correct answer.
  4. Higher density of sebaceous glands

Explanation

Melanin absorbs and scatters UV radiation, protecting keratinocyte DNA; fair-skinned individuals produce less melanin and transfer less to keratinocytes, so they burn more readily. Fat thickness, sebaceous density, and sweat gland number do not determine UV tolerance.

Question 41Anatomy and Physiology of the Skin

Which component of the dermis provides elasticity, allowing skin to return to shape after stretching?

  1. Elastic fibers Correct answer.
  2. Hyaluronic acid
  3. Ground substance
  4. Collagen bundles

Explanation

Elastic fibers, composed largely of elastin, give skin its ability to recoil after deformation. Collagen provides tensile strength, while ground substance and hyaluronic acid provide hydration and support rather than recoil.

Question 42Anatomy and Physiology of the Skin

Which factor most directly slows epidermal turnover and contributes to the dull, drier appearance of mature skin?

  1. Reduced mitotic activity in the stratum basale Correct answer.
  2. Thickening of the stratum corneum
  3. Increased sebum production
  4. Increased melanocyte density

Explanation

With age, keratinocyte proliferation in the stratum basale declines, so the epidermis thins and cells take longer to reach the surface, producing a duller appearance. Sebum production typically decreases rather than increases, and the corneum does not thicken uniformly.

Question 43Anatomy and Physiology of the Skin

Which gland type is found mainly in the axillae and genital region and secretes an odorless fluid that becomes odorous after bacterial action?

  1. Apocrine sweat gland Correct answer.
  2. Sebaceous gland
  3. Eccrine sweat gland
  4. Ceruminous gland

Explanation

Apocrine glands are concentrated in the axillae, areolae, and anogenital region and release a protein-rich secretion into hair follicles. Bacteria metabolize this secretion, producing body odor.

Question 44Anatomy and Physiology of the Skin

Which process describes the programmed death of keratinocytes that allows formation of the protective stratum corneum?

  1. Keratinocyte mitosis
  2. Desquamation
  3. Cornification and apoptosis Correct answer.
  4. Melanogenesis

Explanation

As keratinocytes move outward they undergo terminal differentiation accompanied by programmed cell death, losing their nuclei and organelles and becoming corneocytes. This cornification creates the protective outer barrier.

Question 45Anatomy and Physiology of the Skin

A client's skin shows increased transepidermal water loss after over-exfoliation. Which barrier component has most likely been compromised?

  1. Subcutaneous adipose tissue
  2. Dermal collagen bundles
  3. Basement membrane zone
  4. Intercellular lipid matrix of the stratum corneum Correct answer.

Explanation

The stratum corneum barrier depends on corneocytes embedded in an intercellular lipid matrix rich in ceramides, cholesterol, and fatty acids. Disrupting this lipid matrix increases water loss and permits irritants to penetrate.

Question 46Anatomy and Physiology of the Skin

Which statement best explains why the palms and soles have a stratum lucidum while most other body sites do not?

  1. These areas have a thinner epidermis due to constant friction
  2. These areas contain more melanocytes than other sites
  3. These areas lack a stratum corneum entirely
  4. These areas have thick skin with an extra compact layer of keratinocytes Correct answer.

Explanation

Thick skin of the palms and soles has five epidermal layers, including the translucent stratum lucidum between the granulosum and corneum. This extra layer reflects the greater mechanical demands and thicker keratinization of these surfaces.

Question 47Anatomy and Physiology of the Skin

Which structure supplies nutrients to the avascular epidermis?

  1. Dermal capillaries diffusing through the basement membrane Correct answer.
  2. Keratinocytes of the stratum spinosum
  3. Epidermal melanocytes
  4. Sebaceous glands

Explanation

The epidermis has no blood vessels of its own and relies on diffusion of oxygen and nutrients from capillaries in the underlying dermis. This is why the dermal-epidermal junction must remain healthy.

Question 48Anatomy and Physiology of the Skin

Which change in the dermis is most responsible for the fine lines and sagging seen in photoaged skin?

  1. Increased number of sweat glands
  2. Hyperplasia of melanocytes
  3. Thickening of the basement membrane
  4. Degradation of collagen and elastin by UV-induced enzymes Correct answer.

Explanation

UV radiation activates matrix metalloproteinases that break down collagen and elastin while also impairing new collagen synthesis. The resulting loss of dermal structural support produces wrinkles and laxity.

Question 49Anatomy and Physiology of the Skin

Which characteristic distinguishes eccrine sweat glands from apocrine glands?

  1. Eccrine glands are limited to the axillae
  2. Eccrine glands open directly onto the skin surface via a duct Correct answer.
  3. Eccrine glands secrete into hair follicles
  4. Eccrine glands produce a protein-rich fluid with odor

Explanation

Eccrine glands are coiled glands whose ducts open directly onto the epidermal surface through sweat pores, and they are distributed across nearly the whole body. Apocrine glands instead empty into hair follicles and are limited to specific regions.

Question 50Anatomy and Physiology of the Skin

Which layer of the hair follicle is responsible for the color of the hair shaft?

  1. Cuticle of the inner root sheath
  2. Outer root sheath
  3. Hair matrix melanocytes Correct answer.
  4. Dermal papilla

Explanation

Melanocytes in the hair matrix transfer pigment to the keratinocytes that form the hair shaft, determining hair color. Loss of these melanocytes or their activity leads to graying.