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Exam 5: The Integumentary System

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Question 21

Multiple Choice

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Since apocrine glands are almost inactive until puberty, they may function primarily in

A) cooling the body.
B) sexual signalling, under the influence of androgens.
C) keeping hair from falling out.
D) strengthening melanin in the skin.

E) None of the above
F) C) and D)

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Question 22

Multiple Choice

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The type of sweat gland that begins to function at puberty and is involved in sexual signaling is

A) apocrine.
B) eccrine.
C) sebaceous.
D) holocrine.

E) A) and C)
F) B) and D)

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Question 23

Short Answer

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The vitamin produced by the skin is vitamin ________.

Ceruminous glands of the ear canal are modified sebaceous glands.

The epidermal stem cells that give rise to hair matrix cells are located in a bulge in the ________, near the insertion of the arrector pili muscle.

Since both hair and skin contain keratin, the hair shaft is most comparable to what part of the epidermis?

If you were to have liposuction, you would have tissue removed from which layer?

Skin cancers are the most common types of cancer in the United States, and the most important risk factor is overexposure to ultraviolet radiation.

The cells in the skin that store the most melanin granules are

The thickness of skin is determined by the presence of the stratum lucidum and the thickness of the

Which layer of the integument is found deep to the dermis?

Figure 5.2 Use the diagram above to answer the following questions. -Which letter indicates the portion of a hair that projects above the skin surface?

Name the location and function of these cells: keratinocytes, tactile epithelial cells, melanocytes, and dendritic cells.

Which layer of the integument are toenails and fingernails derived from?

Which layer of the integument contains the stratum basale?

Which is the most abundant and widespread type of sweat gland?

The color of red or blonde hair is due to

Describe the effects of postpubescent aging on sebaceous glands, melanocytes, and the structure of the dermis.

Diffusion of chemicals from a transdermal patch must reach what layer of the skin to be effective?

Which primary layer of the skin contains lamellated granules that aid in waterproofing?