Sleep-Wake Cycle - Endogenous Pacemakers + Exogenous Zeitgebers Flashcards
1
Q
What do both EP + EZ influence?
A
bodily rhythms
e.g. sleep/wake cycle
2
Q
sleep-wake cycle - endogenous pacemaker
A
SCN
pineal gland
3
Q
what does SCN stand for?
A
suprachiasmatic nucleus
4
Q
where is SCN located?
A
hypothalamus (master clock)
5
Q
SCN main function
A
regulate circadian rhythms
6
Q
how does the SCN work out the time of day?
A
info about light
levels of melatonin
7
Q
what does the pineal gland send?
A
levels of light to pineal gland
8
Q
what shape is the pineal gland?
A
pine cone
9
Q
what hormone does the pineal gland secrete?
A
melatonin
10
Q
when does the pineal gland secrete the most melatonin?
A
night
11
Q
when does the pineal gland secrete the lowest levels of melatonin?
A
daylight hours
