Biological Rhythms Flashcards
(8 cards)
1
Q
What is a circadian rhythm?
A
A rhythm that lasts 24 hours
2
Q
What is an infradian rhythm?
A
A rhythm that lasts longer than 24 hours
3
Q
What is an ultradian rhythm?
A
Less than 24 hours
4
Q
What kind of rhythm is the sleep-wake cycle?
A
A circadian rhythm
5
Q
What are the two disruptions of biological rhythms?
A
Shift work and jet lag
6
Q
What is the SCN?
A
The suprachiasmatic nucleus, which is the main pacemaker of the sleep-wake cycle
7
Q
Endogenous pacemakers can be reset by what?
A
Exogenous zeitgebers (external cues)
8
Q
What is the main zeitgeber?
A
Light
