biology 1150 test two (integumentary system) Flashcards
1
Q
integumentary system is composed of
A
skin
2
Q
derivative of the skin (5)
A
- hair
- nails
- sweat glands
- oil glands
- wax glands
3
Q
what is our largest organ
A
skin
4
Q
functions of the skin (5)
A
- protects against bacteria, uv, physical and chemical stress
- prevents water loss
- regulates body temp
- synthesizes vitamin D
- receives stimuli
5
Q
epidermis is rapidly dividing cells close to the _____
A
dermis
5
Q
epidermis is the ____ layer of the skin
A
outer
6
Q
cells at surface of epidermis are ______ and _____
A
flattened / dead
6
Q
dermis is the ____ layer of the skin
A
inner
7
Q
dermis is a ____ layer made primarily of connective tissue
A
thick
8
Q
what does the dermis contain (2)
A
- nerves
- blood vessels
9
Q
hypodermis is _____ for cushion
A
fat
10
Q
the hypodermis is considered part of the skin
a. true
b. false
A
b. false
11
Q
skin color is determined by ____ _____ and distribution and quantity of melanin
A
blood flow
12
Q
melanin is produced by _______ at the base of epidermis
A
melanocytes
13
Q
two forms of melanin
A
yellow to red
black to brown
