Ch 4 Lec 1 Integumentary System Flashcards Preview

Anatomy > Ch 4 Lec 1 Integumentary System > Flashcards

Flashcards in Ch 4 Lec 1 Integumentary System Deck (84):
1

2 components of integumentary system

cutaneous membrane, accessory structures

2

2 parts of cutaneous membrane

epidermis, dermis

3

hair nails and glands are part of the blank component of integ system

accessory structures

4

Three functions of integ system

protect deeper tissues, aid in heat regulation, make vitamin d, aid in excretion of urea and uric acid

5

stratified squamous epithelium makes up the blank

epidermis

6

epidermis lacks blank

blood vessels

7

outer most layers of epidermis are blank

dead

8

four cell types of epidermis

keratinocytes, melanocytes, langerhan, merkel

9

90 percent of epidermal cells and they provide protection

keratinocytes

10

8 percent of epidermal cells

melanocytes

11

epidermal cell type formed from bone marrow and is part of immune response

langerhan cells

12

epidermal cell type that is in the deepest layer and form touch receptor with sensory neuron

merkel cells

13

stem cells divide to produce blank at the basal blank

keratinocytes, lamina

14

keratinocytes slowly blank when pushed up toward the surface

die

15

keratinization takes this long unless removed by abrasion

4 weeks

16

5 layers of epidermis

stratum germinativum
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum

17

Deepest single layer of cells

stratum germinativum

18

Cells attached to each other & to basal lamina by these two things in stratum germinativum

desmosomes, hemidesmosomes

19

8 to 10 cell layers held together by desmosomes
During slide preparation, cells shrink and look spiny

stratum spinosum

20

3 - 5 layers of flat dying cells Show nuclear degeneration

stratum granulosum

21

stratum granulosum contain dark staining blank granules that release lipid that repels water

keratohyalin

22

Seen in thick skin on palms & soles of feet only
Three to five layers of clear, flat, dead cells

stratum lucidum

23

25 to 30 layers of flat dead cells filled with keratin and surrounded by lipids

stratum corneum

24

stratum corneum cells are continuously blank

shed

25

friction of stratum corneum stimulates blank

callus formation

26

Palmer & planter surface
About 30 layers of S. corneum
All 5 layers

thick skin

27

Rest of body surfaces
Fewer layers of S. corneum
No S. lucidum

thin skin

28

forms ridges that extend into the dermis

stratum germinativum

29

blank yolk means good chicke, blank yolk means bad chicken

orange, yellow

30

these increase area of contact for better grip

epidermal ridges

31

this is produced in the epidermis by these cells

melanin, melanocytes

32

everyone has the same blank melanocytes but blank amounts of pigment produced

number, different

33

melanin production is in response to blank hormone

melanocyte stimulating

34

blank in sunlight increases melanin production

uv

35

melanocytes convert blank to blank

tyrosine, melanin

36

two types of melanin

eumelanin, pheomelanin

37

there are blank types of melanin

several

38

brown or black melanin

eumelanin

39

red brown melanin

pheomelanin

40

freckles or liver spots means there are melanocytes blank

in a patch

41

benign melanocytes make up a blank aka blank

nevus, mole

42

inherited lack of tyrosinase

albinism

43

yellow orange pigment that can be in the dermis

carotene

44

carotene is found in the blank and blank

stratum corneum, subcutaneous

45

carotene and blank are pigments

hemoglobin

46

red oxygen carrying pigment in blood cells

hemoglobin

47

the dermis has these two layers

papillary, reticular

48

there is blank connective tissue in papillary layer

areolar ct

49

there are blank in the papillary layer

dermal papillae and capillaries and neurons

50

layer of dermis that is the anchoring layer with large vessels, adipocytes, and nerves

reticular

51

the connective tissue in reticular layer

dense irregular

52

Network of arteries & veins supplying skin
In subcutaneous layer

cutaneous plexus

53

Follows epidermal/dermal boundary
Helps nourish epidermal layer

papillary plexus

54

Weight gain causes fibers to stretch; they loose elasticity & break which causes

stretch marks

55

more weight loss means blank stretch marks

more

56

this is also called the superficial fascia / subcutaneous layer

hypodermis

57

hypodermis has these two connective tissues

areolar, adipose

58

adipose acts as a blank in hypodermis

insulator

59

hypodermis blanks skin

stabilizes

60

three parts that hair is not on

lips, eyelids, plantar, palmar, parts of digits

61

hair number is blank at birth

fixed

62

three types of hair

vellus, terminal, intermediate

63

peach fuzz hair

vellus

64

thicker and darker pigment type of hair

terminal

65

hair on your arms type

intermediate

66

types of hair on different location blank

varies

67

each hair is made up of these three things

shaft, root, bulb

68

base of follicle is

bulb

69


which penetrates into the dermis

root

70

which mostly projects above the surface of the skin

shaft

71

each hair consists of these three things

cuticle, cortex, medulla

72

hair is made of blank cells

dead keratinized epidermal

73

blank which surrounds the root of hair

hair follicle

74

has Sensory nerves surrounding follicle
Detect hair movement

root hair plexus

75

Smooth muscle
Moves hair
‘goose bumps’

arrector pili

76

lasts from 2 to 6 years depending on the body part
matrix cells at base of hair root producing length

anagen stage

77

lasts up to 2 weeks
matrix cells inactive & follicle atrophies

catagen stage

78

three stages of hair growth

anagen, catagen, telogen

79

Hair follicale remains dormant
hair is eventually pushed out by new hair as cycle renews

telogen stage

80

result of melanin produced in melanocytes in hair bulb

hair color

81

Brown/black hair contains large amounts of

eumelanin

82

Blonde hair results from little

eumelanin

83

Red hair has high relative

pheomelanin

84

blank hair is result of decline of all melanin production

gray