Medical Questions on the Epidermis

1. The main organ of the integumentary system is the skin. Name three structure that are associated structures in the integumentary system.
Answer: Hair, nails & various glands
2. Which one of the three layers (epidermis, dermis, subcutaneous tissue) is not part of the integument?
Answer: Subcutaneous tissue
3. The dermis has two main layers. Which one of these is the most superficial?
Answer: Papillary layer
4. What is the most common connective tissue in the dermis?
Answer: Collagenous fibers
5. The release of heat from the body by blood vessels occurs in what main layer of the integument?
Answer: Dermis
6. Which stratum is the deepest layer of the epidermis?
Answer: Stratum basale
7. Which stratum of the epidermis is the most superficial?
Answer: Stratum corneum
8. Approximately how long does it take for the epidermis to renew itself?
Answer: 6 weeks
9. What cell type produces a pigment that darkens the skin?
Answer: Melanocytes
10. What material makes the epidermis tough?
Answer: Keratin
11. What integumentary gland secretes oil?
Answer: Sebaceous glands
12. Which kind of sweat gland (eccrine, apocrine) is involved in evaporative cooling?
Answer: Eccrine
13. What part of the hair is found on the outside of the skin?
Answer: Shaft
14. What does an arrestor pili muscle do?
Answer: It contacts, producing goose bumps and makes hair "stand on end".
15. The outermost portion of the hair is known as the...
Answer: A. Cuticle
16. The hair of the axilla is considered determinate/indeterminate hair (circle the correct answer).
Answer: Determinate
17. Electrolysis is the process of hair removal by using electric current
Explain how this might destroy the process of hair growth in relation to the hair bulb.
Answer: It kills the hair bulb to stop the hair growth. Example is a women with facial unwanted hair.