CH 10 Integumentary System Flashcards
1
Q
Integumentary System
A
consists of skin and its appendages
2
Q
Appendages of the integumentary system includes
A
- glands -hair -fur
- wool -feathers
- scales -claws
- beaks -horns
- hooves -nails
3
Q
Function of skin
A
- water - proofs skin
- prevents fluid loss
- provides species specific coloration
- provides site for vitamin D synthesis
4
Q
Epithelial tissue/ Epithelium
A
tissue that composes skin
5
Q
Epidermis
A
the most superficial layer of skin
epi- (above)
dermis (skin)
-composed of squamous epithilium and the basal layer
6
Q
Avascular layer
A
- another name for the epidermis
- named this because of absense of bood vessels
7
Q
Squamous epithelium
A
composed of flat, plat-like cells
(when arranged in layers it is stratified)
8
Q
Basal layer
A
the deepest layer of the epidermis
-cells layer, multiply, and push up in this layer
9
Q
Keratin
A
a protein that provides skin with its waterproofing properties
Kerat/o (can also mean horny or cornea)
10
Q
Melanocytes
A
- found in the basal layer
- produce and contain melanin
11
Q
Melanin funciton
A
- protects skin from the harmful rays of the sun
- is responsible for skin pigmentation
12
Q
Melan/o
A
- combining form for melanin
- means black or dark
13
Q
Ablinism
A
- the absence of normal pigmentation
- true form = hair, eyes, skin have no pigmentation
14
Q
The layers of the epidermis
A
- stratum corneum
- stratum lucidum
- stratum granulosum
- stratum spinosum
- stratum basale
15
Q
Stratum Corneum
A
- most superficial layer of the epidermis
- consists of layers of dead highly keratinized and flattened cells
- aka horny layer
