Light on retina signals optic-nerve retinohypothalamic tract, which signals hypothalamus nuclei {suprachiasmic nucleus} {suprachiasmatic nucleus} (SCN), which causes daytime pineal-gland melatonin-production reduction by inhibiting paraventricular nuclei.
Biological Sciences>Zoology>Organ>Nerve>Brain>Cerebrum>Diencephalon>Hypothalamus
4-Zoology-Organ-Nerve-Brain-Cerebrum-Diencephalon-Hypothalamus
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Date Modified: 2022.0224