5 The Integumentary System

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 © 2013 Pearson Education, Inc.

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 © 2013 Pearson Education, Inc. 3

The touch sensors of the epidermis are the _________. keratinocytes tactile cells dendritic cells melanocytes Answer: b. tactile cells © 2013 Pearson Education, Inc.

The touch sensors of the epidermis are the _________. keratinocytes tactile cells dendritic cells melanocytes Answer: b. tactile cells © 2013 Pearson Education, Inc. 5

A patient taking a drug that inhibits cell division (such as certain chemotherapy drugs) would expect which layer of the epidermis to be affected first? Stratum corneum Stratum lucidum Stratum spinosum Stratum basale Answer: d. Stratum basale © 2013 Pearson Education, Inc.

A patient taking a drug that inhibits cell division (such as certain chemotherapy drugs) would expect which layer of the epidermis to be affected first? Stratum corneum Stratum lucidum Stratum spinosum Stratum basale Answer: d. Stratum basale © 2013 Pearson Education, Inc. 7

Fingerprints are copies of __________. dermal papillae epidermal papillae dermal ridges epidermal ridges Answer: d. epidermal ridges © 2013 Pearson Education, Inc.

Fingerprints are copies of __________. dermal papillae epidermal papillae dermal ridges epidermal ridges Answer: d. epidermal ridges © 2013 Pearson Education, Inc. 9

The principal 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 © 2013 Pearson Education, Inc.

The principal 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 © 2013 Pearson Education, Inc. 11

Which three pigments contribute to skin color? Carotene, melanin, hemoglobin Keratin, melanin, hemoglobin Melanin, keratin, hemoglobin Hemoglobin, carotene, keratin Answer: a. Carotene, melanin, hemoglobin © 2013 Pearson Education, Inc.

Which three pigments contribute to skin color? Carotene, melanin, hemoglobin Keratin, melanin, hemoglobin Melanin, keratin, hemoglobin Hemoglobin, carotene, keratin Answer: a. Carotene, melanin, hemoglobin © 2013 Pearson Education, Inc. 13

What causes sunspots? Too much sun over a long period of time Too much sun in a short amount of time Application of excessive amounts of sun block A fungus Answer: d. A fungus © 2013 Pearson Education, Inc.

What causes sunspots? Too much sun over a long period of time Too much sun in a short amount of time Application of excessive amounts of sun block A fungus Answer: d. A fungus © 2013 Pearson Education, Inc. 15

Which of the following types of sweat gland secretion is thought to deter insects? Eccrine Apocrine Ceruminous Mammary Answer: c. Ceruminous © 2013 Pearson Education, Inc.

Which of the following types of sweat gland secretion is thought to deter insects? Eccrine Apocrine Ceruminous Mammary Answer: c. Ceruminous © 2013 Pearson Education, Inc. 17

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 © 2013 Pearson Education, Inc.

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 © 2013 Pearson Education, Inc. 19

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 © 2013 Pearson Education, Inc.

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 © 2013 Pearson Education, Inc. 21

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. © 2013 Pearson Education, Inc.

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. © 2013 Pearson Education, Inc. 23

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 © 2013 Pearson Education, Inc.

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 © 2013 Pearson Education, Inc. 25

The skin plays a role in the manufacture of vitamin ______. B C D Answer: d. D © 2013 Pearson Education, Inc.

The skin plays a role in the manufacture of vitamin ______. B C D Answer: d. D © 2013 Pearson Education, Inc. 27

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 © 2013 Pearson Education, Inc.

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 © 2013 Pearson Education, Inc. 29

Which of the following types of skin cancer is the most dangerous? Basal cell Squamous cell Melanoma All are equally dangerous. Answer: c. Melanoma © 2013 Pearson Education, Inc.

Which of the following types of skin cancer is the most dangerous? Basal cell Squamous cell Melanoma All are equally dangerous. Answer: c. Melanoma © 2013 Pearson Education, Inc. 31

Which of the following is not true for the skin in old age? It is less susceptible to bruising. The rate of epidermal cell replacement slows. The skin thins. Secretions from glands decrease. Answer: a. Less susceptible to bruising © 2013 Pearson Education, Inc.

Which of the following is not true for the skin in old age? It is less susceptible to bruising. The rate of epidermal cell replacement slows. The skin thins. Secretions from glands decrease. Answer: a. Less susceptible to bruising © 2013 Pearson Education, Inc. 33