Homeostasis Flashcards
1
Q
Homeostasis
A
The maintenance of a constant internal
environment within physiological tolerance limits
2
Q
Thyroxin
A
Thermoregulation.
Released from the thyroid gland when body
temperature is low
3
Q
Melatonin.
A
Secreted by the pineal gland (in the brain)
Circadian Rhythms
4
Q
Leptin
A
Secreted from adipose cells. Appetite suppression.
Binds to receptors located in the hypothalamus
5
Q
Endocrine system
A
Release chemical messengers called
hormones into the blood to act on distant target cells
- Hormones only act on the cells with a specific receptor
6
Q
Insulin
A
secreted by β-cells to lower blood sugar levels
7
Q
Glucagon
A
secreted by A-cells to increase blood sugar levels
8
Q
A
