Nail Anatomy and Physiology Quiz
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Questions and Answers

What is the primary function of the nail cuticle?

  • Produces sweat for thermoregulation
  • Serves as an antimicrobial barrier
  • Overlies the nail bed
  • Anchors the nail body in place (correct)
  • Which statement accurately describes eccrine sweat glands?

  • They secrete a viscous fluid rich in proteins and lipids.
  • They empty secretions into hair follicles.
  • They are associated exclusively with densely hairy areas.
  • They produce sweat primarily for thermoregulation. (correct)
  • What distinguishes apocrine sweat from eccrine sweat?

  • Apocrine sweat contains lipids and proteins. (correct)
  • Apocrine sweat is primarily found on the forehead.
  • Apocrine sweat is odorless while eccrine sweat is not.
  • Eccrine sweat is more viscous than apocrine sweat.
  • What role does dermcidin play in the skin?

    <p>Acts as an antimicrobial agent</p> Signup and view all the answers

    Which of the following correctly defines the lanula?

    <p>It is a crescent-shaped area overlying the nail bed.</p> Signup and view all the answers

    Study Notes

    Nail Parts

    • Nail bed: Living tissue that serves as the foundation for nail growth; composed of specialized epidermis cells.
    • Nail folds: Surround the nails, providing structural support and anchorage for the nail body.
    • Nail cuticle (eponychium): A thin strip of epidermis that protects the area between the skin and the nail.
    • Lanula: The crescent-shaped, thick epithelium covering the base of the nail bed, often visible as a whitish area.
    • Pheromones: Chemical compounds found in sweat from axillary and inguinal glands, influencing social and biological behaviors.
    • Eccrine sweat glands: Distributed throughout the body, these glands produce sweat primarily for temperature regulation.

    Skin Parts

    • Dermcidin: An antimicrobial peptide that inhibits bacterial growth on the skin's surface.
    • Apocrine sweat glands: Associated with hair follicles, these glands are mainly located in densely hairy regions; their secretions are released into hair follicles.
    • Apocrine sweat: More viscous than eccrine sweat due to the presence of proteins and lipids.
    • Sebaceous glands: Glands linked to hair follicles that secrete oily substances (sebum) to lubricate hair and skin.
    • Eccrine sweat glands: These glands directly release sweat onto the skin, which primarily consists of water along with minerals and dermcidin; sweat helps in thermoregulation through evaporation.

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    Description

    Test your knowledge on the various parts of nails and their functions. This quiz covers important structures such as the nail bed, nail folds, and cuticle. Dive into the fascinating world of nail anatomy and its relation to human physiology.

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