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The suprachiasmatic nucleus controls internal body clock rhythms
Tiny cluster of hypothalamic cells uses light input to sync biological timing
Located in the hypothalamus, the suprachiasmatic nucleus contains roughly 20,000 neurons acting as the master circadian pacemaker. Receiving direct light signals from retinal ganglion cells, it synchronises daily body temperature, hormone release, and sleep cycles.
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Tags: circadian, brain, clock
The suprachiasmatic nucleus controls internal body clock rhythms: the short answers
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- Tiny cluster of hypothalamic cells uses light input to sync biological timing. The figure is taken from NIH, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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