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human anatomy exam 1 > integumentary system > Flashcards

integumentary system Flashcards

1
Q

integument

A

skin

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2
Q

integumentary system

A

skin, hair, nails

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3
Q

integument functions

A

-protection
-prevention of water loss and gain
-temperature regulation
-vitamin production
-immune defense
-sensory reception
-secretion

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4
Q

general structure

A

epidermis, dermis, subcutaneous layer/hypodermis

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5
Q

epidermis

A

outer layer of skin, most superficial

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6
Q

dermis

A

inferior/deep to epidermis

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7
Q

subcutaneous layer/hypodermis

A

deep to dermis

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8
Q

the epidermis is composed of several layers called

A

stratum/strata

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9
Q

epidermis layers superficial to deep

A

-stratum corneum
-stratum lucidum
-stratum granulosum
-stratum spinosum
-stratum basale

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10
Q

what layer only has thick skin

A

stratum lucidum

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11
Q

locations with thick skin

A

-areas with lots of friction
-palms of hands
-soles of feet

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12
Q

types of skin markings

A

nevus, freckles, hemangioma

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13
Q

nevus

A

mole, overgrowth of melanocytes

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14
Q

freckles

A

areas of very active melanocytes

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15
Q

hemangioma

A

blood vessel growth outside of the skin

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16
Q

friction ridges

A

-fingerprints
-help reduce friction
-help grasp

17
Q

effects of friction on the epidermis

A

callus or blisters

18
Q

callus

A

caused by long term friction; thickening of the skin

19
Q

blister

A

caused by short term severe friction; epidermis and dermis separate

20
Q

two layers of the dermis

A

papillary and reticular

21
Q

papillary layer

A

-superficial region deep to epidermis
-smaller
-has bumps

22
Q

reticular layer

A

-deeper region that forms most of the dermis
-glands, receptors, vessels

23
Q

what interlocks to increase the surface area between the epidermis and dermis

A

dermal papillae and epidermal ridges

24
Q

blood supply in the dermis

A

-supply nutrients to avascular epidermis
-important in controlling body temperature

25
Q

vasoconstriction

A

vessel gets smaller

26
Q

vasodilation

A

vessel gets larger

27
Q

what structure is deep to the integument

A

hypodermis

28
Q

functions of the subcutaneous layer

A

-protects underlying structures
-stores energy
-thermal insulation

human anatomy exam 1 (17 decks)

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