Circadian Rhythm Flashcards
1
Q
Circadian clocks help anticipate…
A
changes in light, temp., moisture, resource availability, predation
2
Q
Circadian clocks are significant:
A
adaptive; occupying temporal niches to enhance survival
3
Q
Circadian clocks coordinate…
A
physiological and biochemical processes
4
Q
Main nucleus for circadian rhythm
A
suprachiasmatic nucleus (SCN)
5
Q
In phase response curve, dead zone means…
A
exposure to light does not delay or advance SOL
6
Q
In day, PER1 release is…
A
abundant
7
Q
At night, PER1 release is…
A
little
8
Q
Lesion to SCN
A
no rhythm
9
Q
No light (DD condition)
A
rhythm exists, but phase shifts
10
Q
Two processes govern sleep and wake
A
Homeostatic sleep pressure (S)
Circadian wake promotion
11
Q
Blind people have what kind of rhythm?
A
have free-running rhythms
