week 9-rhythms and sleep Flashcards
1
Q
what regulates wake sleep cycle
A
superchiasmatic nucleus SCN of hypothamus
2
Q
SCN
A
lesions SCN removed rhythmatic of sleep wake in rate
if removed SCN neuron continue produce circadian rhythm of action but faulty
3
Q
what does SCN regulate
A
sleep wake via influence other glands
4
Q
other glands like phineas gland
A
release hormone melatonin
increase sleepiness
treat insomnia
starts hours before bed
5
Q
regulation endogenous
A
no as adjustment cycle make reponse to enviroment
6
Q
endogenous and wake sleep
A
time givers- enviro adjust bio clock
7
Q
how enviro light adjust circadian rhythm
A
retinohypothalmic pathway—-cells— retina—SCN—- brain made up retinal ganglion containing photopigment melanopsin—- activity turn in SCN
