Test - Skin Flashcards
1
Q
- Light-skinned races such as Caucasians have….
A
Approximately the same amount of melanin as races with darker skin.
iBook: pg.630
2
Q
- What major tissue doesn’t make up skin?
A
Smooth tissue.
3
Q
- What would NOT happen if the core body temperature was too low?
A
Sweat would cool the body as it evaporated. NB 32 WKST - SKIN
4
Q
- Without properly working lungs, what would occur?
A
Homeostasis wouldn’t be maintained.
5
Q
- Catalase is NOT a…
A
Pigment. NB 34
6
Q
- What was the responding variable in the enzyme and temperature lab?
A
The amount of enzymes.
NB. 34
7
Q
- How many of skin layers are there in the epidermis?
A
5.
NB.35
8
Q
- Muscles associated with hair follicles and are positioned in such a way that they contract in reaction to cold or emotional stimuli.
A
Arrector pili.
NB.35
9
Q
- From innermost to outermost, what are the layers of skin?
A
Hypodermis, dermis, epidermis.
NB.35
10
Q
- What is an example of negative feedback?
A
Waste building up in your lower intestine.
11
Q
- What helps your body cool off?
A
The evaporation of sweat from the skin’s surface.
12
Q
- Positive feedback control mechanisms are:
A
More rare than negative feedback mechanisms and tend to increase the original stimulus.
13
Q
- When the body temperature becomes abnormally high, thermoregulatory homeostasis is maintained by:
A
An increase in sweat gland activity and an increase in blood flow in the skin.
14
Q
- Out of the following, what is an example of positive feedback? Releasing carbon dioxide as you take in oxygen, urine production, insulin production after eating to decrease blood sugar, blood vessels dilating and you sweat, all of them or none of them.
A
None of them.
15
Q
- How does skin regulate body temperature?
A
By enabling excess heat to escape from the body.
