Endogenous Pacemakers Flashcards
1
Q
What are they?
A
An internal biological clock governing biological rhythms
2
Q
Where is the SCN?
A
Hypothalamus
3
Q
What is the SCN?
A
Governs circadian rhythms
4
Q
What does the hypothalamus tell the pineal gland to release?
A
Melatonin
5
Q
What does melatonin do?
A
Increases drowsiness
6
Q
How do our rhythms become entrained?
A
Endogenous pacemakers interact with exogenous zeitgebers
7
Q
What happens to melatonin at night?
A
It’s secreted
8
Q
What happens to melatonin in the morning?
A
It’s suppressed
