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anatomy > integumentary system (lab) > Flashcards

integumentary system (lab) Flashcards

1
Q

what kinds of tissues compose the skin

A

epidermis, dermis

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2
Q

hypodermis function

A

anchors skin to underlying organs
shock absorber
insulate deeper tissues

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3
Q

another name for hypodermis

A

subcutaneous layer

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4
Q

what is the outer layer of skin named

A

epidermis

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5
Q

is epidermis vascular or avascular

A

avascular

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6
Q

what cell produces keratin

A

keratinocytes

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7
Q

what are the epidermis layers

A

stratum basale
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum

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8
Q

describe stratum spinosum

A

cells becoming flatter and more keratinized

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8
Q

describe stratum basale

A

deepest layer of epidermis
cells undergoing mitosis
daughter cells pushed upward

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9
Q

describe stratum granulosum

A

cells flattened
ONLY in thick, hairless skin of palms and soles of feet

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10
Q

describe stratum corneum

A

outermost layer
dead cells filled with keratin

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11
Q

define dermis

A

connective tissue
underlies the epidermis

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12
Q

what are the layers of the dermis

A

papillary layer
reticular layer

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13
Q

describe the papillary layer

A

upper dermal region
creates highs and low points on skin

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14
Q

describe the reticular layer

A

deepest skin layer
contains blood vessels, sweat/oil glands, deep pressure receptors

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15
Q

what is the bottom layer of skin

A

hypodermis

16
Q

hypodermis function

A

energy storage
connect dermis to muscles and bones
insulate and protect body

17
Q

what happens to the hypodermis as you age

A

decreases in size, and skin sags

18
Q

define hair shaft

A

thin, flexible cylinder of nonliving keratinized epithelial cells

19
Q

define hair bulb

A

base of hair follicle
builds the hair shaft
blood vessels in hair bulb nourish cells and bulb

20
Q

define hair follicle

A

pore that surrounds root and strand of hair
exists in top two layers of skin

21
Q

hair papilla

A

contains the blood supply for the hair

22
Q

define hair root

A

part of hair that is located in the skin

23
Q

define arrector pili muscle

A

tiny muscle that attaches to the base of the hair follicle and dermal tissue
causes hair to stand up straight

24
Q

define sudoriferous glands

A

produces sweat
two types of glands

25
Q

what are the two types of sudoriferous glands

A

eccrine (stink) and apocrine (no stink) glands

26
Q

define sebaceous glands

A

produces oil (sebum)
glands activated at puberty

27
Q

define pacinian corpuscle

A

sensory receptors for deep pressure

28
Q

define meissner’s corpuscle

A

sensory receptors for light pressure

anatomy (6 decks)

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