Homeostasis Flashcards
1
Q
Homeostasis
A
The maintenance of a constant internal environment within the body
2
Q
Negative feedback
A
If there is a change away from the normal optimum value, action is automatically taken to reverse this change
3
Q
Endotherm
A
An organism that is warm blooded and has a fairly constant body temperature
4
Q
Ectotherm
A
An organism that is cold blooded and their body temperature varies with the external temperature
5
Q
Piloerection
A
When it is too cold hairs stand up to trap heat
6
Q
Vasoconstriction
A
When it is too cold vessels constrict to keep blood in important parts of the
