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10 cards from this deck
Biological processes over a 24-hour period
Approx. 24.25 hours (free-run)
Light
Biological processes over periods shorter than 24 hours
Approx. 5 cycles, each lasting around 90 minutes
Hypothalamus
Induces drowsiness & decreases cellular activity
Pineal gland
SCN signals pineal gland to release melatonin
SCN inhibits melatonin release
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