Homeostasis Flashcards
1
Q
Define thermoneutral zone (TNZ)
A
The range of ambient T over which the heat from metabolism is sufficient to maintain body core T(25-30C)
2
Q
At what range of T can a naked human thermoregulate?
A
10-55C
3
Q
Where is increase/ decrease body temperature detected in the body?
A
Increase- anterior hypothalamus
Decrease- posterior
4
Q
What’s the type of response increase/ decrease in temperature can have?
A
Increase- sym cholinergic neurons
Decrease- sym adrenergic
Somatic motor neurons
5
Q
How does brown fat undergo thermogenesis
A
Hormone induced- uncouple of mitochondrial oxidation from phosphorylation in brown adipose
6
Q
What’s hyperpyrexia?
A
> 40C
7
Q
Define basal metabolic rate
A
Minimum level of energy required to sustain vital functions
