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NM Nail Technician practice questions

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Question 1Infection Control, Sanitation, and Safety

In a Nevada salon, which item is classified as a single-use implement that must be discarded after one client?

  1. A stainless steel cuticle nipper
  2. A reusable glass mixing dish
  3. A porous emery board Correct answer.
  4. A metal pusher with a removable tip

Explanation

Porous items such as emery boards, buffer blocks, and wooden sticks cannot be effectively cleaned and disinfected, so they are discarded after each client. Non-porous metal and glass implements are designed to be cleaned, disinfected, and reused.

Question 2Infection Control, Sanitation, and Safety

What is the correct first step when cleaning a metal nail file that has visible debris after a service?

  1. Wipe it with a clean paper towel to remove debris Correct answer.
  2. Soak it in disinfectant without wiping
  3. Place it in a closed drawer overnight
  4. Spray it with disinfectant and air dry

Explanation

Cleaning, the physical removal of debris, must happen before disinfection because disinfectant cannot penetrate soil and reach the surface. Removing visible debris with a towel or brush prepares the implement for immersion in an EPA-registered disinfectant.

Question 3Infection Control, Sanitation, and Safety

A client arrives with an inflamed, pus-filled area beside the nail. What is the appropriate action for the nail technician?

  1. Refuse the service and refer to a physician Correct answer.
  2. Apply a warm compress and proceed
  3. Cover it and continue the manicure
  4. Drain the area and apply an antiseptic

Explanation

A pus-filled, inflamed lesion suggests a bacterial infection that is outside the technician's scope of practice. The technician must not treat it and should refer the client to a physician, then disinfect the station.

Question 4Infection Control, Sanitation, and Safety

Which action best demonstrates proper hand hygiene before beginning a manicure?

  1. Using hand sanitizer instead of washing
  2. Rinsing hands quickly under cold water
  3. Washing with soap and warm water for at least 20 seconds Correct answer.
  4. Wiping hands on a towel used earlier

Explanation

Hand washing with soap and warm running water for at least 20 seconds physically removes transient microorganisms. This is required before and after each client and after removing gloves.

Question 5Infection Control, Sanitation, and Safety

How should clean, disinfected implements be stored between clients?

  1. In a drawer with used files
  2. In the technician's apron pocket
  3. In a closed, clean container away from soiled items Correct answer.
  4. In an open tray beside the sink

Explanation

Disinfected implements must be kept in a clean, closed container to prevent recontamination from dust, moisture, or soiled items. Clean and soiled implements must never share storage.

Question 6Infection Control, Sanitation, and Safety

What does an EPA-registered hospital-grade disinfectant label indicate for salon use?

  1. It removes nail polish residue
  2. It is safe to drink
  3. It sterilizes every implement
  4. It kills microorganisms on environmental surfaces when used as directed Correct answer.

Explanation

An EPA-registered hospital-grade disinfectant is labeled to kill pathogens on hard, non-porous surfaces when used according to the manufacturer's directions. It is not a sterilant and does not replace cleaning.

Question 7Infection Control, Sanitation, and Safety

Which piece of personal protective equipment is most appropriate when filing acrylic nails and creating dust?

  1. A bandana
  2. A cloth face mask
  3. A surgical mask
  4. A NIOSH-approved respirator Correct answer.

Explanation

Abrasive filing of acrylics creates fine dust that can irritate the respiratory tract. A NIOSH-approved respirator is designed to filter airborne particles; loose cloth coverings do not provide reliable filtration.

Question 8Infection Control, Sanitation, and Safety

A bottle of disinfectant in the salon is unlabeled. What should the technician do?

  1. Label it with the product name and date Correct answer.
  2. Discard it in the trash
  3. Use it if it looks clear
  4. Mix it with another disinfectant

Explanation

All chemicals must be labeled with the product name and, in many jurisdictions, the date of mixing. Unlabeled containers are a safety hazard and must be identified or discarded according to regulations.

Question 9Infection Control, Sanitation, and Safety

A technician notices a small cut on her finger before starting a service. What is the best practice?

  1. Rinse it and continue barehanded
  2. Cover it with a bandage and a glove or finger cot Correct answer.
  3. Apply lotion and proceed
  4. Ignore it and begin the service

Explanation

Open lesions can admit pathogens and can also transmit bloodborne organisms to clients. Covering the cut with a bandage and then a glove or finger cot provides a barrier during service.

Question 10Infection Control, Sanitation, and Safety

Which statement correctly describes the difference between disinfection and sterilization?

  1. Sterilization only removes visible debris
  2. Sterilization destroys all microbial life including spores Correct answer.
  3. Disinfection and sterilization are identical processes
  4. Disinfection destroys all microbial life including spores

Explanation

Sterilization destroys all microbial life, including bacterial spores, and is done with an autoclave. Disinfection reduces pathogens on surfaces but does not reliably destroy spores.

Question 11Infection Control, Sanitation, and Safety

What is the correct contact time for an implement immersed in a disinfectant?

  1. Ten seconds of dipping
  2. Until the next client arrives
  3. As long as it takes to dry
  4. The time stated on the manufacturer's label Correct answer.

Explanation

Disinfectants require a specific contact time to kill pathogens, and this time is listed on the product label. Shortening it leaves microorganisms viable even if the implement looks clean.

Question 12Infection Control, Sanitation, and Safety

A client's skin is accidentally nicked and a small amount of blood appears. What should the technician do first?

  1. Stop, put on gloves, and clean the area with an EPA-registered disinfectant Correct answer.
  2. Wipe the blood with a towel and resume
  3. Apply polish over the area
  4. Continue the service and clean up afterward

Explanation

Any blood exposure requires stopping the service, donning gloves, and cleaning and disinfecting the affected area and implements with an EPA-registered product labeled for bloodborne pathogens. Exposure procedures protect both technician and client.

Question 13Infection Control, Sanitation, and Safety

Why should a technician avoid using a wooden orange stick on more than one client?

  1. Wood dulls metal nippers
  2. Wood changes color over time
  3. Wood is porous and cannot be adequately disinfected Correct answer.
  4. Wood is expensive to replace

Explanation

Porous materials absorb liquids and harbor microorganisms in ways that cleaning and disinfection cannot reliably reach. Wooden implements are therefore single-use and must be discarded after each client.

Question 14Infection Control, Sanitation, and Safety

Which practice best prevents cross-contamination between clients in a pedicure basin?

  1. Cleaning, then disinfecting with an EPA-registered product for the labeled contact time Correct answer.
  2. Wiping the basin with a dry towel
  3. Spraying the basin with air freshener
  4. Rinsing the basin with warm water

Explanation

Pedicure basins must be cleaned of debris, then disinfected with an EPA-registered product used for the full labeled contact time. Rinsing or wiping alone does not kill pathogens.

Question 15Infection Control, Sanitation, and Safety

A technician develops a rash after handling a disinfectant concentrate. What is the most appropriate response?

  1. Dilute it more than the label states
  2. Continue using it with bare hands
  3. Switch to an unlabeled generic product
  4. Review the SDS and use the recommended gloves and ventilation Correct answer.

Explanation

The Safety Data Sheet describes hazards, required protective equipment, and first-aid measures for a chemical. Following the SDS and label instructions protects the technician from dermatitis and inhalation injury.

Question 16Infection Control, Sanitation, and Safety

Which statement about UV nail lamps and infection control is accurate?

  1. UV lamps sterilize the surrounding work area
  2. UV lamps do not replace cleaning and disinfection of surfaces and implements Correct answer.
  3. UV lamps make single-use files reusable
  4. UV lamps eliminate the need for hand washing

Explanation

UV curing lamps are for polymerizing gel products, not for environmental disinfection. Surfaces and implements still require cleaning and EPA-registered disinfection, and single-use items remain single-use.

Question 17Infection Control, Sanitation, and Safety

What should a technician do with a towel that has been used on a client's hands?

  1. Store it with clean linens
  2. Place it in a closed receptacle for laundering Correct answer.
  3. Fold it and reuse it for the next client
  4. Shake it out and hang it on a chair

Explanation

Used linens are contaminated and must be placed in a closed receptacle until laundered, then stored separately from clean linens. This prevents cross-contamination of the work area and clean supplies.

Question 18Infection Control, Sanitation, and Safety

A client with a known fungal nail infection requests a full set of enhancements. What is the appropriate action?

  1. Refuse the service and refer to a physician Correct answer.
  2. File the affected nail aggressively and proceed
  3. Apply an over-the-counter antifungal and proceed
  4. Apply the enhancements over the infection

Explanation

Fungal nail infections are contraindications to nail services because the service may worsen the condition and spread organisms. The technician should refuse the service and refer the client to a physician.

Question 19Infection Control, Sanitation, and Safety

Which action correctly follows the principle of not double-dipping during a nail service?

  1. Wiping the brush on the client's skin
  2. Using the same brush for all ten nails
  3. Pouring product into a separate dish for each use Correct answer.
  4. Returning used product to the main container

Explanation

Double-dipping introduces contaminants from the client into the main product container. Pouring out the needed amount into a separate dish prevents contamination of the bulk supply.

Question 20Infection Control, Sanitation, and Safety

During a service, a technician notices the disinfectant solution has become cloudy and contains debris. What is the best action?

  1. Continue using it until the end of the day
  2. Strain out the debris and reuse it
  3. Replace it with a freshly prepared solution Correct answer.
  4. Top it off with fresh disinfectant

Explanation

Disinfectant solutions become depleted and contaminated with debris, which reduces efficacy. The solution should be replaced with a freshly prepared batch at the labeled concentration.

Question 21Infection Control, Sanitation, and Safety

A technician uses a disinfectant labeled for a 10-minute contact time but immerses implements for only 2 minutes. What is the consequence?

  1. Pathogens may survive because the labeled kill time was not met Correct answer.
  2. The implements are adequately disinfected
  3. The implements are sterilized
  4. The disinfectant becomes more concentrated

Explanation

A disinfectant's efficacy depends on the labeled contact time; shortening it means pathogens may remain viable. Cleaning and full immersion for the stated time are both required for effective disinfection.

Question 22Infection Control, Sanitation, and Safety

Which scenario best illustrates a break in the chain of infection at the portal of entry?

  1. Washing hands before a service
  2. Laundering used towels
  3. Covering a cut on the technician's hand Correct answer.
  4. Disinfecting a work surface

Explanation

A cut is a portal of entry through which pathogens can enter the body; covering it interrupts transmission at that link. Disinfection, hand washing, and laundering interrupt other links such as the reservoir or mode of transmission.

Question 23Infection Control, Sanitation, and Safety

A salon stores disinfectant concentrate and acetone together on a shelf near a heat source. Which correction is most important?

  1. Store them next to food supplies
  2. Place them in direct sunlight
  3. Move them to a cool, ventilated area with the SDS on hand Correct answer.
  4. Transfer both into unlabeled spray bottles

Explanation

Flammable and concentrated chemicals must be kept in a cool, well-ventilated area away from heat and ignition sources, with the SDS accessible. This reduces fire and exposure risks.

Question 24Infection Control, Sanitation, and Safety

A client reports burning and redness under a UV-cured gel after the service. What is the technician's most appropriate response?

  1. Advise the client to see a physician and document the incident Correct answer.
  2. Tell the client to ignore it
  3. Reapply more product to cover the area
  4. Apply another layer and continue

Explanation

Burning and redness may indicate an allergic reaction or overexposure to uncured product, which is a medical concern. The technician should refer the client for medical care and document the incident for the salon's records.

Question 25Infection Control, Sanitation, and Safety

Which combination correctly pairs a barrier method with the infection-control link it interrupts during a manicure?

  1. Gloves worn by the technician interrupt the portal of exit from the technician Correct answer.
  2. A clean towel interrupts the mode of transmission from the technician's hands
  3. A face mask interrupts the reservoir of the client
  4. Hand washing interrupts the susceptible host

Explanation

Gloves create a barrier that prevents microorganisms from leaving the technician's hands through the portal of exit, protecting the client. Other barriers interrupt different links depending on how they are used.

Question 26Infection Control, Sanitation, and Safety

A technician is preparing a workstation before a client arrives. Which item is classified as a single-use supply that must be discarded after one client?

  1. A glass dappen dish
  2. A washable nylon nail brush
  3. A reusable stainless steel cuticle pusher
  4. A disposable foam toe separator Correct answer.

Explanation

Single-use supplies are porous or low-cost items that cannot be reliably cleaned and disinfected, so they are discarded after one client. Foam toe separators absorb moisture and perspiration and cannot be decontaminated effectively. Metal pushers, nylon brushes designed for cleaning, and glass dappen dishes are reusable when cleaned and then disinfected with an EPA-registered hospital-grade product.

Question 27Infection Control, Sanitation, and Safety

Which action best describes proper hand hygiene immediately before beginning a manicure service?

  1. Rubbing hands with a scented lotion to soften the skin
  2. Applying an alcohol-based hand sanitizer over visible polish residue
  3. Washing with soap and warm running water, then drying with a clean towel Correct answer.
  4. Wiping hands on a cloth towel kept at the station for the day

Explanation

Hands must be washed with soap and warm running water, rinsed, and dried with a clean single-use towel or hand dryer before and after each service. Soap and friction lift and remove transient microorganisms and soil. Sanitizers are not a substitute when hands are visibly soiled, and shared cloth towels harbor organisms.

Question 28Infection Control, Sanitation, and Safety

A technician is cleaning a metal nail file before disinfection. Which step belongs in the cleaning phase rather than the disinfection phase?

  1. Storing the dry file in a covered container after it is fully dry
  2. Scrubbing the file with a brush and detergent to remove visible debris Correct answer.
  3. Rinsing the file with clean water after the contact time has elapsed
  4. Immersing the file in a hospital-grade disinfectant for the labeled contact time

Explanation

Cleaning is the physical removal of visible debris, oil, and residue using soap or detergent, water, and a brush; it must occur before an item is disinfected. Disinfectants cannot penetrate debris, so any soil left on the file protects microorganisms from the chemical. Immersion, timing, rinsing, and storage all belong to the disinfection and post-disinfection steps.

Question 29Infection Control, Sanitation, and Safety

What is the correct way to store cleaned and disinfected implements while they wait for the next client?

  1. In a jar of disinfectant kept open at the station
  2. Loose in a drawer with files and buffers
  3. In a closed, labeled container reserved for disinfected items Correct answer.
  4. On a paper towel beside the client's water cup

Explanation

Disinfected implements must be kept in a clean, closed, labeled container that is used only for disinfected items so they are not recontaminated before use. Open drawers, open disinfectant jars, and work surfaces expose clean tools to dust, debris, and splash. Keeping the container closed and dedicated protects the disinfection that was just completed.

Question 30Infection Control, Sanitation, and Safety

A technician uses a hospital-grade disinfectant on a porous wooden manicure stick. Why is this practice unacceptable in a salon?

  1. Porous materials cannot be reliably penetrated and disinfected Correct answer.
  2. The disinfectant label requires glass containers only
  3. The disinfectant will permanently discolor the wood
  4. Wood absorbs the disinfectant and releases fumes

Explanation

Disinfectants work on surfaces they can contact fully; porous materials such as wood, foam, and some plastics can trap microorganisms and debris inside, so they cannot be reliably disinfected. These items are therefore treated as single-use and discarded after one client. Correcting the practice means replacing the stick with a new one for each client rather than trying to disinfect it.

Question 31Infection Control, Sanitation, and Safety

A technician is about to disinfect a set of stainless steel nippers. Which preparation step is required before immersion?

  1. Rinsing them in water only and shaking off excess
  2. Cleaning them with detergent and a brush, then drying them Correct answer.
  3. Spraying them with a surface sanitizer and wiping them
  4. Opening the nippers fully and leaving them dry

Explanation

The manufacturer's instructions and infection-control standards require cleaning and drying an implement before it goes into the disinfectant. Cleaning removes blood, oil, and product residue that would otherwise shield microorganisms. Drying prevents dilution of the disinfectant and allows full contact with the chemical.

Question 32Infection Control, Sanitation, and Safety

A technician is setting up a pedicure station for a new client. Which practice gives the strongest protection against spreading organisms from a previous client?

  1. Placing a fresh towel in the basin and refilling it with water
  2. Rinsing the basin with hot water until the water runs clear
  3. Cleaning the basin with detergent, then disinfecting it for the labeled contact time Correct answer.
  4. Spraying the basin with a sanitizer and wiping it dry

Explanation

Pedicure basins must be cleaned with detergent to remove visible debris and then disinfected with an EPA-registered hospital-grade product for the full contact time stated on the label. Rinsing or spraying alone does not meet this standard. A fresh towel does not treat the basin surface, which remains the reservoir for organisms.

Question 33Infection Control, Sanitation, and Safety

A technician is preparing a disinfectant solution from a concentrate. Which action most directly protects the technician from chemical injury?

  1. Preparing a large batch to last several weeks in an open bucket
  2. Mixing the concentrate with a hot water solution to speed dilution
  3. Decanting the concentrate into an unlabeled spray bottle for convenience
  4. Adding the concentrate to water while wearing gloves and eye protection Correct answer.

Explanation

Concentrates are corrosive and can splash into the eyes or onto skin, so dilution requires gloves, eye protection, and good ventilation, following the manufacturer's dilution ratio. Mixing concentrate into water, rather than water into concentrate, reduces splashing. Unlabeled containers and long-open storage also create hazards and weaken the solution.

Question 34Infection Control, Sanitation, and Safety

A client tells the technician she has a cold with a cough and runny nose. Which action is the most appropriate infection-control response for the technician?

  1. Perform the service while wearing a mask and washing hands frequently
  2. Proceed normally because a cold is not a bloodborne condition
  3. Ask the client to reschedule and document the reason in the appointment record Correct answer.
  4. Refuse the service and ask the client to leave immediately

Explanation

A client with an active respiratory infection should be encouraged to reschedule so the salon does not become a transmission setting. Documenting the reason protects the business and keeps the record accurate. If the service must proceed for a scheduled follow-up, the technician should follow salon policy and reinforce hand hygiene and respiratory etiquette.

Question 35Infection Control, Sanitation, and Safety

A technician is choosing a disinfectant for tools that may contact blood during a service. Which label claim is essential?

  1. A claim of killing HIV-1 and hepatitis B virus on the label Correct answer.
  2. A claim of being fragrance-free and gentle on skin
  3. A claim of being suitable for use on the floor
  4. A claim of removing nail polish quickly

Explanation

A disinfectant used on implements that may contact blood must carry label claims for the relevant bloodborne pathogens, such as HIV-1 and hepatitis B virus, and be registered with the EPA as a hospital-grade product. These claims confirm the product has been tested against those organisms. Fragrance, floor suitability, and polish removal are unrelated to infection control.

Question 36Infection Control, Sanitation, and Safety

A technician accidentally spills disinfectant concentrate on her forearm. What is the correct first response?

  1. Neutralize the spill with another chemical from the shelf
  2. Flush the area with running water for the time stated on the safety data sheet Correct answer.
  3. Wipe the arm with a dry paper towel and continue working
  4. Apply a soothing lotion and cover the area with a bandage

Explanation

The safety data sheet for the product lists first-aid measures, which for most disinfectant concentrates include flushing the affected skin with running water for a specified duration. Flushing dilutes and removes the chemical and limits tissue damage. The incident should then be reported and documented per salon policy.

Question 37Infection Control, Sanitation, and Safety

A client arrives with an inflamed, swollen area around one toenail that is draining. What is the technician's most appropriate action?

  1. Cover the area with a bandage and continue the service
  2. Refer the client to a physician and decline the service Correct answer.
  3. Soak the toe in the pedicure basin and proceed with polish
  4. Trim the affected nail short and apply an antiseptic

Explanation

Signs of inflammation, swelling, and drainage suggest an active infection that is outside the technician's scope of practice. The client should be referred to a physician, and the service should be declined to avoid spreading organisms and worsening the condition. The technician may not diagnose or treat the area.

Question 38Infection Control, Sanitation, and Safety

A salon owner wants to confirm that a new disinfectant is being used correctly. Which combination of records best supports this?

  1. A list of clients served each day and their service types
  2. A note that the disinfectant was purchased at a professional supplier
  3. A folder of product advertisements and a photo of the label
  4. A log of dilution ratios, immersion start and end times, and solution change dates Correct answer.

Explanation

Correct disinfection depends on the labeled dilution, the full contact time, and regular changing of the solution before it becomes soiled or depleted. A written log of dilution, immersion timing, and change dates lets the salon verify each of these variables. Purchase records and client lists do not demonstrate that the process was followed.

Question 39Infection Control, Sanitation, and Safety

A technician is reviewing why a client developed redness and itching at the site where a metal file touched the skin. Which explanation best fits an infection-control analysis rather than a product reaction?

  1. The file was disinfected but not rinsed, leaving chemical residue
  2. The client has a known allergy to nickel in metal tools
  3. The file was cleaned and disinfected, but the technician's hands were not washed between clients Correct answer.
  4. The client's skin was dry before the service began

Explanation

Unwashed hands are a common vehicle for transferring organisms from one client to another and can cause localized skin irritation or infection at a contact site. The scenario asks for an infection-control explanation, so the breakdown in hand hygiene is the relevant cause. Chemical residue, metal allergy, and dry skin are product or skin-condition issues, not transmission events.

Question 40Infection Control, Sanitation, and Safety

A technician is deciding whether to reuse a fabric towel that was used to dry a client's hands. Which reasoning is correct?

  1. Place it in a closed laundry container and use a clean towel for the next client Correct answer.
  2. Reuse it after spraying it with disinfectant and letting it air dry
  3. Reuse it after shaking it out, because it looks dry
  4. Reuse it for the same client only, then discard it in the trash

Explanation

Fabric towels that contact client skin are soiled linens and must be placed in a closed container and laundered before reuse; a clean towel is used for each client. Shaking, spraying, or reserving the towel for the same client does not remove organisms or prevent transfer to the technician and station. Soiled linens are handled as a separate waste stream from disinfected implements.

Question 41Anatomy and Physiology of the Nail and Skin

Which structure anchors the nail plate to the nail bed while allowing it to move forward as it grows?

  1. The lateral nail fold
  2. The hyponychium Correct answer.
  3. The eponychium
  4. The lunula

Explanation

The hyponychium is the seal of skin beneath the free edge of the nail plate, where the plate separates from the nail bed. It anchors the plate while permitting forward movement during growth and helps keep debris and microorganisms out of the nail bed.

Question 42Anatomy and Physiology of the Nail and Skin

A client has a nail plate that curves sharply downward on both sides, forming a deeply pinched C-shape along the entire free edge. Which nail shape is this?

  1. Trumpet nail
  2. Spoon nail
  3. Pincer nail Correct answer.
  4. Tile-shaped nail

Explanation

A pincer nail is distinguished by an exaggerated transverse curvature in which the sides of the plate curl inward and can pinch the nail bed. The curvature typically runs the length of the plate and may become painful as the edges press into the surrounding tissue.

Question 43Anatomy and Physiology of the Nail and Skin

Which layer of the epidermis is composed of dead, keratinized cells that form the skin's outermost protective surface?

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

Explanation

The stratum corneum is the outermost epidermal layer, made up of flattened, fully keratinized cells that are continually shed and replaced. Its keratin-rich composition provides the skin's main barrier against water loss and environmental insult.

Question 44Anatomy and Physiology of the Nail and Skin

The nail matrix is responsible for which function?

  1. Secreting sebum to lubricate the cuticle
  2. Supplying blood to the nail bed
  3. Sensing pressure at the free edge
  4. Producing new nail cells that become the nail plate Correct answer.

Explanation

The matrix is the generative portion of the nail unit, where keratinized cells divide and are pushed forward to build the nail plate. Its activity determines the thickness, shape, and surface quality of the plate, so matrix damage can leave a permanent groove.

Question 45Anatomy and Physiology of the Nail and Skin

What is the most accurate description of the nail cuticle?

  1. The groove that separates the nail wall from the plate
  2. The fold of skin along the side of the nail plate
  3. The hardened plate that covers the matrix
  4. The dead tissue seal formed where the eponychium meets the nail plate Correct answer.

Explanation

The cuticle is the thin, non-living band of keratinized tissue that seals the space between the eponychium and the nail plate. That seal limits the entry of moisture, debris, and microbes into the nail unit, which is why aggressive cuticle removal can create a portal for infection.

Question 46Anatomy and Physiology of the Nail and Skin

Which nail unit structure is visible as the whitish half-moon at the base of the nail plate?

  1. The nail bed
  2. The lunula Correct answer.
  3. The free edge
  4. The nail sinus

Explanation

The lunula is the visible portion of the matrix that appears pale because its cells are only partly keratinized and less translucent than the mature plate. Its shape and prominence vary among individuals and are not a sign of disease on their own.

Question 47Anatomy and Physiology of the Nail and Skin

A client's nail plate appears thin and flat, and the fingertip looks wider than the rest of the finger. Which term describes this nail condition?

  1. Onychorrhexis
  2. Onychauxis
  3. Onychophagy
  4. Onychatrophia Correct answer.

Explanation

Onychatrophia refers to atrophy of the nail unit, producing a thin, underdeveloped, or shrunken plate. When the plate is severely thinned or lost, the fingertip may look broadened or flattened because the support of a normal plate is reduced.

Question 48Anatomy and Physiology of the Nail and Skin

Which statement correctly describes the relationship between the nail bed and the nail plate?

  1. The nail bed is a glandular structure that secretes the nail's keratin.
  2. The nail bed is the deepest layer of the matrix and produces the entire plate.
  3. The nail bed sits above the plate and forms the cuticle seal.
  4. The nail bed lies beneath the plate and contributes a small amount to plate thickness as it grows. Correct answer.

Explanation

The nail bed is the vascular tissue on which the plate rests, running from the lunula to the hyponychium. It is not merely a passive support; cells along the bed add a thin layer to the underside of the plate as it advances.

Question 49Anatomy and Physiology of the Nail and Skin

Which structure is located at the base of the nail and forms the proximal boundary of the nail unit?

  1. The proximal nail fold Correct answer.
  2. The hyponychium
  3. The lateral nail fold
  4. The nail groove

Explanation

The proximal nail fold is the fold of skin at the base of the nail that overlaps the newly forming plate and protects the matrix region. Its lower surface produces the cuticle that seals the nail sinus.

Question 50Anatomy and Physiology of the Nail and Skin

A client who works with cleaning chemicals presents with dry, cracked skin around the nail folds. Which layer of the skin has been most directly compromised in its barrier function?

  1. The stratum basale
  2. The stratum corneum Correct answer.
  3. The subcutaneous layer
  4. The dermis

Explanation

The stratum corneum provides the principal barrier that keeps water in and irritants out, so repeated chemical exposure that dries and cracks the skin indicates damage to this outer layer. Once the barrier is disrupted, further moisture loss and irritation are more likely.