integument part 1

Question 1

Three layers of skin

Answer 1

-epidermis, dermis and hypodermis

Question 2

epidermis

Answer 2

outer layer
-keratinized stratified squamous
-protection
-basal layer folded to form dermal papillae
-think skin has 4 layers thick has 5

Question 3

dermis

Answer 3

-thicker
-connective tissue layer
-sensation, protection, thermoregulation
-has nerves and blood supply and fibroblasts and sweat glands
-apical layer of deris are folded to form dermal papillae (more prominant in thick skin)
-densse irreuglar c.t.

Question 4

hypodermis

Answer 4

mainly adipose and sweat glands
-adipose responsible for producing vitamin d and triglycerides

Question 5

eye lid

Answer 5

.5mm thick

Question 6

heels of feet

Answer 6

4.0mm thick

Question 7

how many layers of ectoermal tissue does the skin have

Answer 7

up to 7

Question 8

cuando esa puerta suene y te de una paranda ni de mi te acuerdes

Question 9

skin also?

Answer 9

protects vitamin B folates

Question 10

integumentary system

Answer 10

-skin
-hair
-nails
-sweat glands
-oil glands
-mammary gland

Question 11

cutaneous membrane

Answer 11

epidermis and dermis
-dermis has hypodermis

Question 12

accessory strucutres

Answer 12

-hair follicles
-exocrine glands
-nails

Question 13

integumentary functions

Answer 13

-physical protection
-excretion of products
-synthesis of product
-sensation
-immune defense

Question 14

thick skin

Answer 14

-palms and soles
-made of five skin layers

Question 15

think skin

Answer 15

-rest of the body
-four layers

Question 16

four epidermis cell types

Answer 16

-keratinocytes
-malanocytes
-merkel cells
-langerhans

Question 17

keratinocytes

Answer 17

produce tough protein= keratin

Question 18

melanocytes

Answer 18

pigment cells deep in the dermis
-produce melanin

Question 19

merkel cells

Answer 19

sensory cells

Question 20

langerhans

Answer 20

fixed macrophages

Question 21

layers of epidermic

Answer 21

come lets get some booze
(superficial to deep)

Question 22

basal layer

Answer 22

-where melanocytes are
-cells here do active reproduction

Question 23

spinosum

Answer 23

-keratinocytes bound together by desmosomes

Question 24

granulosum

Answer 24

keratinocytes produce keratin

Question 25

corneum

Answer 25

superficial layer -interlocking dehydrated dead cells

Question 26

epidermal ridges

Answer 26

-formed by stratum germinativum -they are dermal papillae that extend into dermis -fingerprints

Question 27

skin color is caused by?

Answer 27

-dermal blood supply -thickness of stratum corneum -concentrations of carotene and melanin

Question 28

two layers of the dermis

Answer 28

-papillary layer -reticular layer

Question 29

papillary layer

Answer 29

superficial dermis

Question 30

reticular layer

Answer 30

deep dermis

Question 31

papillary layer has?

Answer 31

-dermal papillae -capillaries -nerve axons

Question 32

reticular layer has?

Answer 32

-dense irregular connective tissu e -hair follicles -sweat glands -sebaceous glands

Question 33

subcutaneous layer

Answer 33

also called the hypodermis -not part of the integumentary system just stabilizes it

Question 34

what is in the hypodermis

Answer 34

-adipose tissue -major blood vessels

Question 35

hair

Answer 35

made of keratin

Question 36

hair follicles

Answer 36

cells are in concentric rings

Question 37

hair types

Answer 37

-vellus, intermediate and terminal

Question 38

vellus hair

Answer 38

covers most of the body

Question 39

intermediate hair

Answer 39

covers arms and legs

Question 40

terminal hair

Answer 40

covers head

Question 41

hair functions

Answer 41

-protect from uv light -indulation -guards nose and ear entrances -arrector pili muscle contractions= goosebumps -sensation impulse to brain (bug on arm)

Question 42

hair color

Answer 42

varies bc of melaning by melanocytes -decreases with age

Question 43

glands in the skin

Answer 43

sebaceou snad sweat -they lubricate the epidermis and excrete waste and help w thermoregulation

Question 44

sweat gland

Answer 44

-apocrine -ceruminous -mammary -merocrine

Question 45

ceruminous and mammary glands are

Answer 45

type of apocrine glands

Question 46

sebaceous glands function

Answer 46

-secrete sebum to lubricate skin -everywhere but palms and soles -lots on forehead, face and upper back -blocked duct= acne

Question 47

apocrine glands

Answer 47

-sweat glands -armpits and nipples -pheromones to attract fetus in men and women

Question 48

merocrine

Answer 48

-sweat glands -also called eccrine glands -all over the body -lots on palms and soles -sweat to cool down

Question 49

mammary glands

Answer 49

produce milk when hormones come from pituitary gland

Question 50

ceruminous gland

Answer 50

-type of apocrine gland -only in the ear canal -makes cerumen/ ear wax

Question 51

nail structures

Answer 51

-free edge -lateral nail fold -lanula -eponychium -hyponychium

Question 52

aging

Answer 52

-epidermis and dermis thinner -less vitamin d made -less malanocyte activity -less glandular activity -hair follicles stop functioning