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Biol 205 > Ch. 4 > Flashcards

Ch. 4 Flashcards

1
Q

integumentary protection barriers

A

physical, chemical, biological (immune response)

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2
Q

integument thermoregulation is

A

sweating, blood vessels,

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3
Q

integument waste excretion is

A

secretions of sweat has waste

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4
Q

integument lipid synthesis

A

in hypodermis

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5
Q

integument megtabolic functions

A

hormones being actgivated, vitamin d

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6
Q

integument cutaneous sensation

A

pressure, vibration, temp, pain

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7
Q

two major components of integument

A

cutanous membrane (skin)
-superficial, epidermis, hypodermis

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8
Q

most superficial layer of skin

A

epidermis

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9
Q

epidermis has how many layers

A

five distinct

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10
Q

epidermis type epithelial tissue

A

keratinized stratified squamous

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11
Q

keratin

A

protein, produced by cells in epithelium, give epidermis toughness

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12
Q

deepest layer of epidermis is

A

stratum basale

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13
Q

stratum basale cells are attached to

A

basal lamina

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14
Q

stratum basale stem cells replace lost

A

kefratinocytes

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15
Q

how many days to replace epidermis cells

A

25-45 days

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16
Q

stratum basale contain meloncytes to

A

produce melanin to absorb ultraviolet radiation

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17
Q

stratum basale merkel cells

A

nerve endings to communicate when compressed

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18
Q

second deep layer of epidermis is

A

stratum spinosum

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19
Q

stratum spinosum desmosomes

A

tie cells together to distribute stress

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20
Q

above stratum spinosum is

A

stratum granulosum

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21
Q

how many layers of stratum granulosum

A

3-5 layers

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22
Q

stratum granulosun shows process of

A

keratinization

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23
Q

keratincytes in stratum granulosum stuff themselves with

A

protein

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24
Q

layer above stratum granulosum

A

stratum lucidum

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25
Q

how many layers of stratum corneum

A

15-30 layers

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26
Q

statum lucidum is only seen in

A

thick skin

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27
Q

most superficial layer of epidermis is the

A

stratum corneum

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28
Q

below epidermis is

A

dermis

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29
Q

dermis is what type of tissue

A

connective

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30
Q

dermis tissue components

A

leukocytes, fibroblasts, wbc

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31
Q

if you bleed in cut you hit

A

dermis layer

32
Q

dermis papillary layer is

A

areolar ct with collagen, and elastic fibers

33
Q

paillary layer of dermis has

A

dermal papillae to help make fingerprints pattern

34
Q

below papillary layer is

A

reticular layer

35
Q

reticular layer is

A

dense irregular ct with adipose cells and thick collagen fibers

36
Q

below dermis is

A

hypodermis

37
Q

according to textbook the hypodermis

A

is not part of skin

38
Q

hypodermis anchors

A

skin to underlying structures

39
Q

hair is

A

dead keratinized cells

40
Q

the root of the hair is located

A

in hair follicule

41
Q

at base of hair root

A

goes into swollen region for hair bulb

42
Q

hair papilla is

A

blood vessels to provide to the hair

43
Q

hair matrix

A

does cell divison to get more hair, pushes old cells upward

44
Q

arrector pili muscle

A

causes goose bumps, help insolate

45
Q

average scalp hair

A

100,000

46
Q

vellus hair is

A

peach fuzz, babies all of em

47
Q

2/3 of women hair is

A

vellus

48
Q

90% of mens hair is

A

terminal hair

49
Q

hair growth is fueled by

A

hormones and testosterone

50
Q

what secretes sebum oil

A

sebaceous glands

51
Q

what type of gland is sebaceous glands

A

holocine gland

52
Q

sebum prevents hair

A

water loss

53
Q

sebaceous follicles are on

A

face, back, chest, nipples, and external genitalia

54
Q

cells in sweat glands

A

myoepithelial cells

55
Q

most common sweat gland

A

eccrine sweat gland

56
Q

3 million glands of

A

sweat on body

57
Q

2 modified sweat glands

A

ceruminous glands and mammary glands

58
Q

nails are a scale like modification of

A

stratum corneum

59
Q

what is top of nail

A

nail body

60
Q

what is below the nail body

A

nail bed

61
Q

nail root is the coninuation of

A

nail body

62
Q

nail root covers up

A

nail matrix

63
Q

nail matrix pushes body outward

A

causes growth

64
Q

nail matrix you can see

A

lanula

65
Q

the cuticle is called

A

eponychium

66
Q

skin cancer american rate

A

1/5

67
Q

three types of skin cancer

A

basal cell, squamous cell, malignant melanoma

68
Q

how many cancers are basal cell carcinoma

A

70%

69
Q

which skin cancer is the least malignant

A

basal cell carcinoma

70
Q

what causes basale cell carcinoma

A

proliferation of cells in stratum basale

71
Q

squamous cell carcinoma arise from

A

keratinocytes in stratum spinosum

72
Q

malignant melanoma is cancer of

A

melanocytes

73
Q

highly spreadably skin cancer

A

malignant melonoma

74
Q

skin cancer rule

A

ABCDE rule

75
Q

ABCDE rule

A

asymmetry, border irregularity, color, diameter greater than 6 mm, evolving

Biol 205 (45 decks)

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