Integumentary System Flashcards
1
Q
Skin functions
A
- protection
- excretion
- temp maintenance
- nutrient storage
- vitamin D3 synthesis
- sensory detection
2
Q
Epidermis
A
- made of keratinocytes (layers)
- mechanical protection
- stops fluid loss
- defense
keratin shed, new ones always pushing out
3
Q
Skin colour
A
depends on…
- blood supply
- carotene and melanin
- epidermal pigmentation
4
Q
dermis
A
PAPILLARY LAYER
- vascularized
- contains vessels and nerves
RETICULAR LAYER
-collagen and elastic fibers
5
Q
stretch marks
A
- reticular layer of dermis = stretched
6
Q
cleavage
A
- natural
- allow for movement
- form over typical areas of stress
7
Q
Hypodermis
A
- stabilizes skin position against organs and tissues
- attaches to fascia
8
Q
Cuticle
A
superficial dead protective layer
9
Q
Sebaceous Gland
A
- discharge waxy sebum onto hair
- discharge on epidermal surface
10
Q
Suderiferous Gland
A
- apocrine sweat glands
(odorous + watery discharge) - merocrine sweat gland
(perspiration)
11
Q
Mammary glands
A
similar to apocrine glands
12
Q
Ceruminous glands
A
- make waxy cerumen
- some in nose (mostly in ear)
13
Q
Eponychium
A
on nail, cuticle
overlies root
14
Q
nail
A
- no dermis
- papillary layer under nail
- a lot of sensory receptors
- no protection layer
