quiz #2 - integumentary system Flashcards

1
Q

Keratinized stratified squamous epithelium composes the…

A

epidermis

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2
Q

Which pigment secreted by specialized cells in the skin is capable of absorbing ultraviolet light?

A

Melanin

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3
Q

In a skin infection, which cell will take up and process microbial antigens?

A

Intraepidermal macrophages (Langerhans cells)

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4
Q

Apoptosis of cells occurs within the…

A

stratum granulosum

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5
Q

Dense irregular connective tissue will be found in the…

A

dermis

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6
Q

This type of exocrine gland undergoes a higher rate of mitosis due to its holocrine secretion

A

Sebaceous gland

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7
Q

Which condition results from androgens inhibiting hair growth in genetically predisposed adults?

A

Male-pattern baldness

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8
Q

You stepped on a nail. List the sequential strata of the epidermis that the nail penetrated through to reach the dermis

A

Corneum, lucidum, granulosom, spinosum, basale

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9
Q

“Goose bumps” are caused by…

A

contraction of arrector pili muscles

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10
Q

When you are hot, blood vessels in the dermis _____ to maintain homeostasis

A

dilate

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11
Q

When you are cold, blood vessels in the dermis _____ to maintain homeostasis

A

constrict

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12
Q

Heat loss from the body will _____ when blood vessels in the dermis dilate

A

increase

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13
Q

Heat loss from the body will _____when blood vessels in the dermis constrict

A

decrease

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14
Q

matching: hair shaft

A

Physical portion of hair, made of dead keratinized epidermal cells bonded together by protein

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15
Q

matching: medulla

A

Central area of hair

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16
Q

matching: cortex

A

Consists of hardened cells…

17
Q

matching: matrix

A

Actively dividing cells within hair, inside bulb

18
Q

matching: cuticle

A

Consists of hardened cells containing keratin; outer layer of hair

Portion of stratum corneum that grows onto the nail body

19
Q

matching: nail matrix

A

Actively dividing cells of the nail, region of nail growth, 1mm per week

20
Q

matching: nail bed

A

Hardened epithelial tissue above the hyponychium

21
Q

matching: Lunula

A

white crescent shaped area at proximal end of nail bed

22
Q

In the elderly, blood supply to the dermis is reduced and sweat glands are less active. This combination of factors would most affect…

A

the ability to thermoregulate

23
Q

_____ is/are a result of a progressive loss of collagen and elastic fibers

24
Q

The “rule of nines” is used to estimate the…

A

Surface area affected by burns

25
A person with a severe sunburn would most likely have damage in which layer of the skin?
Epidermis
26
In frostbite, the skin damage primarily occurs due to...
Ice crystal formation in tissues
27
A patient with vitiligo will show which of the following in affected areas?
Loss of skin pigmentation
28
The primary risk factor for the development of squamous cell carcinoma is...
Exposure to UV radiation