1. The Integumentary System5
The Integumentary System

2. The skin and its accessory structures (e. g
The skin and its accessory structures (e.g., fingernails) make up which of the following organ systems?
Epidermis system
Skin system
Integumentary system
Dermal system
Answer: c. Integumentary system

3. The saying “beauty is only skin deep” is only pertinent to the __________ layer, which is outwardly visible.
epidermal
dermal
hypodermal
integumentary
Answer: a. epidermal

4. The principal role of melanin is to __________.
give one that “healthy tan look”
keep the body cool
provide a waterproof layer
shield the nucleus from damage by ultraviolet radiation
Answer: d. shield the nucleus from damage by ultraviolet radiation

5. The principle role of keratin is to __________.
give one that “healthy tan look”
keep the body cool
provide a waterproof layer
shield the nucleus from damage by ultraviolet radiation
Answer: c. provide a waterproof layer.

6. The touch sensors of the epidermis are the _________.
keratinocytes
tactile cells
epidermal dendritic cells
melanocytes
Answer: b. tactile cells

7. A patient taking a drug that inhibits cell division (such as certain chemotherapy drugs) would expect which layer of the epidermis to be most noticeably affected?
Stratum corneum
Stratum lucidum
Stratum spinosum
Stratum basale
Answer: d. Stratum basale

8. Fingerprints are copies of __________.
dermal papillae
epidermal papillae
dermal ridges
epidermal ridges
Answer: d. epidermal ridges

9. The principle tissue found in the dermal layer is ___________.
dense irregular connective tissue
stratified squamous epithelum
dense regular connective tissue
areolar connective tissue
Answer: a. dense irregular connective tissue

10. Which of the following types of sweat gland secretion is thought to deter insects?
Eccrine
Apocrine
Ceruminous
Mammary
Answer: c. Ceruminous

11. The most important role of the eccrine sweat gland is _________.
milk production
stress-induced sweating
body temperature regulation
earwax production
Answer: c. body temperature regulation

12. overexposure to the sun overheating harmful bacteria
One critical function of sebum, in addition to roles in waterproofing and skin softening, is that it provides protection against ____________.
overexposure to the sun
overheating
harmful bacteria
abrasions or cuts to the skin
Answer: c. harmful bacteria

13. The arrector pili muscle contracts to allow for hair growth.
What is one major function of arrector pili muscle contraction that is particularly important in nonhuman mammals?
The arrector pili muscle contracts to allow for hair growth.
The arrector pili muscle contracts to shed dead hairs.
The arrector pili muscle contracts to alarm an approaching predator.
All of the above are true.
Answer: c. The arrector pili muscle contracts to alarm an approaching predator.

14. Excessive estrogen secretion from the ovaries
A female patient with excessive facial hair growth may have which of the following ailments?
Excessive estrogen secretion from the ovaries
Inadequate secretion of insulin from the pancreas
Inadequate secretion of thyroid hormone from the thyroid gland
Excessive secretion of androgens from an adrenal tumor
Answer: d. Excessive secretion of androgens from an adrenal tumor

15. inadequate body temperature maintenance
Loss of one’s skin, such as with severe burns, leads to an increased risk of __________.
bacterial infection
inadequate body temperature maintenance
dehydration
all of the above
Answer: d. all of the above

16. The skin plays a role in the manufacture of vitamin ______.B C D
Answer: d. D

17. Which of the following types of skin cancer is the most dangerous?
Basal cell
Squamous cell
Melanoma
All are equally dangerous.
Answer: c. Melanoma