Chapter 5 - The Integumentary System Notes Flashcards Preview

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1
Q

Chapter 5 - The Integumentary System

the integumentary system consists of

A

skin
hair
nails
glands

2
Q

Chapter 5 - The Integumentary System

function of skin

A

protects
helps regulate body temp
produces vitamin d
detects stimuli

3
Q

Chapter 5 - The Integumentary System

skin is the

A

epidermis

4
Q

Chapter 5 - The Integumentary System

thick skin has _ layers

A

5

5
Q

Chapter 5 - The Integumentary System

where is thick skin found

A

palms of hands and soles of feet

6
Q

Chapter 5 - The Integumentary System

thin skin has

A

4 layers

7
Q

Chapter 5 - The Integumentary System

what is word for layer

A

stratum

8
Q

Chapter 5 - The Integumentary System

what are the 5 layers of skin (basement to exterior)

A

germinativum
spinosum
lucidum
corneum

9
Q

Chapter 5 - The Integumentary System

what is function of skin and membranes

A

protection of underlying tissue
excretion
regulation of normal body temp
synthesis of vit D in response to UV light
storage of nutrients
detection of touch, pressure, pain, and temp

10
Q

Chapter 5 - The Integumentary System

_____ is the transformation of living cells of the stratum corneum to protective cell layers that contain keratin

A

keratinization

11
Q

Chapter 5 - The Integumentary System

keratinized cells are filled with keratin and have a _______ both of which contribute to structural strenght

A

protein envelope

12
Q

Chapter 5 - The Integumentary System

keratinized cells are alos held together by many

A

desmosomes

13
Q

Chapter 5 - The Integumentary System

intercellular spaces (in keratinized cells) are filled with _______ that contribute to teh impermeability of teh epidermis to water

A

lipids

14
Q

Chapter 5 - The Integumentary System

____ is found in skin and the inside of hair whereas _____ occurs in nails and the outside of hairs.

A

soft keratin

hard keratin

15
Q

Chapter 5 - The Integumentary System

hard keratin makes cells

A

more durable

16
Q

Chapter 5 - The Integumentary System

________ such as those on the palms and soles, improve our gripping ability and increase the skin’s sensitivity.

A

epidermal ridges

17
Q

Chapter 5 - The Integumentary System

epidermal ridges interlock with the underlying _______

A

dermis

18
Q

Chapter 5 - The Integumentary System

__________ are part of the immune system

A

langerhans cells

19
Q

Chapter 5 - The Integumentary System

_______ provide inof about objects that touch the skin

A

merkel cells

20
Q

Chapter 5 - The Integumentary System

the color of the skin depends on 2 factors

A

epidermal pigmentation

dermal circulation

21
Q

Chapter 5 - The Integumentary System

People who lack ______ are very pale

A

pigment melanin

22
Q

Chapter 5 - The Integumentary System

the epidermis contains

A

carotene

melanin

23
Q

Chapter 5 - The Integumentary System

_____ is found in orange vegetables.

A

carotene

24
Q

Chapter 5 - The Integumentary System

carotene is found often in

A

stratum corneum

25
Q

Chapter 5 - The Integumentary System

carotene can be converted to

A

vit A

26
Q

Chapter 5 - The Integumentary System

what is vitamin A needed for

A

photocreptors of the eye

normal epithelial tissue

27
Q

Chapter 5 - The Integumentary System

melanin

A

brown pigment that gives skin a dark color

28
Q

Chapter 5 - The Integumentary System

______ produces melanin

A

melanocytes

29
Q

Chapter 5 - The Integumentary System

where is melanin produced

A

inside melanosomes

30
Q

Chapter 5 - The Integumentary System

_____ transfers melanin to keratinocytes

A

melanocytes

31
Q

Chapter 5 - The Integumentary System

skin cancer

A

melanoma

32
Q

Chapter 5 - The Integumentary System

increased blood flow produces

A

red skin color

33
Q

Chapter 5 - The Integumentary System

decreased oxygen content resulting in bluish skin color

A

cyanosis

34
Q

Chapter 5 - The Integumentary System

interupptions of the dermal blood supply can lead to such conditions as

A
cyanosis
decubitis ulcers (bedsores)
35
Q

Chapter 5 - The Integumentary System

fat stored in the ________ acts to insulate the body to maintain a constant body temp

A

adipocytes

36
Q

Chapter 5 - The Integumentary System

The elimination or giving off heat in the form of sweat

A

evaporation

37
Q

Chapter 5 - The Integumentary System

skin exposed to UV light produces

A

vitamin D3 or cholecalciferol

38
Q

Chapter 5 - The Integumentary System

Vitamin D is converted to ____ in the _____

A

calcitriol

kidneys

39
Q

Chapter 5 - The Integumentary System

Catcitriol is needed for normal absorption of

A

calcium in the intestine

40
Q

Chapter 5 - The Integumentary System

skin contains receptors for

A
pain
touch
hot
cold
pressure
41
Q

Chapter 5 - The Integumentary System

_____ remove small amounts of waste products but not important in excretion

A

skin glands

42
Q

Chapter 5 - The Integumentary System

______ stimulates the maintenance and repair of the epidermis and the secretion of epithelial glands

A

epidermial growth factor (EGF)

43
Q

Chapter 5 - The Integumentary System

dermis is divided into two layers

A

papillary layer

reticular layer

44
Q

Chapter 5 - The Integumentary System

the papillary layer of the dermis contains

A

blood vessels, lymphatic, and sensory nerves

45
Q

Chapter 5 - The Integumentary System

function of the papillary layer

A

supports and nourishes the overlying epidermis

46
Q

Chapter 5 - The Integumentary System

the reticular layer consists of

A

a meshwork of collagen and elastic fibers oreintated to resist tension in teh skin

47
Q

Chapter 5 - The Integumentary System

what causes stretch marks

A

extensive distortion of the dermis

48
Q

Chapter 5 - The Integumentary System

what forms lines of cleavage (as on the hands)

A

pattern of collagen and elastic fiber bundles

49
Q

Chapter 5 - The Integumentary System

dermitits

A

inflammation that generally affects the papillary layer

50
Q

Chapter 5 - The Integumentary System

located beneath the dermis, the _______ or _______ is loose connective tissue

A

subcutaneous layer

hypodermis

51
Q

Chapter 5 - The Integumentary System

the subcutaneous layer contains

A

collagen and elastin fibers

52
Q

Chapter 5 - The Integumentary System

the hypodermis does

A

stabilizes the skin’s position against underlying organs and tissues and is a site of fat storage

53
Q

Chapter 5 - The Integumentary System

variations in hair color often reflexts differences in ____ produced by _______

A

pigment melanin

melocytes

54
Q

Chapter 5 - The Integumentary System

glands that discharge an oily secretion onto hair follicles

A

sebaceous glands

55
Q

Chapter 5 - The Integumentary System

oily secretion

A

sebum

56
Q

Chapter 5 - The Integumentary System

the cells in a hair follicle that are responsible for forming hair

A

matrix cells

57
Q

Chapter 5 - The Integumentary System

balding occurs when hair folicles shift from producing _________ to producing _________

A

terminal hairs

vellus hairs

58
Q

Chapter 5 - The Integumentary System

glands of the integumentary system

A

sebaceous glands
sweat glands
mammary glands
ceruminous glands

59
Q

Chapter 5 - The Integumentary System

sweat glands aka

A

sudoriferous glands

60
Q

Chapter 5 - The Integumentary System

two classes of sweat glands

A

aponcrine

merocrine

61
Q

Chapter 5 - The Integumentary System

ceruminous glands are located

A

ear

62
Q

Chapter 5 - The Integumentary System

parts of the nails

A

nail body
nail bed
cuticle

63
Q

Chapter 5 - The Integumentary System

as the body ages the epidermis gets:

A
thinner
vit D production reduces
melanocyte activity decines
glandular activity declines
blood supply to the dermis reduces 
the repair of damaged tissue slows down
64
Q

Chapter 5 - The Integumentary System

appearance of aging epidermis

A

this saggy skin

looks dehydrated