Chapter 8: Part 8 Flashcards
1
Q
Light serves as a _____, which means that it resets our circadian rhythm.
A
zeitgeber
2
Q
what is a circadian rhythm?
A
a daily rhythmical change in behavior or physiological process
3
Q
what is a zeitgeber?
A
A stimulus (usually the light of dawn) that resets the biological clock that is responsible for circadian rhythms.
4
Q
what is asuprachiasmatic nucleus?
A
A nucleus situated atop the optic chiasm. It contains a biological clock that is responsible for organizing many of the body’s circadian rhythms.
5
Q
people with advanced sleep phase syndrome fall asleep around…
A
fall asleep at 7:30 pm and awaken around 4:30 am
6
Q
people with delayed circadian rhythms…
A
are unable to fall asleep before 2:00 am
7
Q
what does pineal gland secrete?
A
melatonin
