Homeostasis Flashcards
1
Q
Homeostasis
A
The state of steady internal body conditions maintained by living systems despite external changes
2
Q
How is homeostasis achieved?
A
Negative Feedback
Change detected → body triggers coordinated response → change is reversed
3
Q
Negative Feedback
A
A detected change away from a set level produces a response that reverses the change
4
Q
Thermoregulation
A
Homeostatic regulation of internal body temperature
5
Q
Temperatures death will occur at
A
> 42 → death
< 26 → death
6
Q
What detects a change in external temperature?
A
Thermoreceptors in the dermis of the skin
7
Q
Vasoconstriction of Arterioles
A
Reduces blood flow to the skin to reduce loss of heat
8
Q
Vasodilation of Arterioles
A
Increases blood flow to skin to dissipate excess heat
