Melatonin and Circadian rhythm regulation. Brain with pineal gland
Keywords
rythm,
brain,
regulation,
pineal,
gland,
nucleus,
cycle,
human,
anatomy,
vector,
illustration,
eye,
sunlight,
production,
light,
sensitivity,
system,
anatomical,
poster,
hormone,
flat,
glandular,
secretion,
sleep,
synthesis,
biological,
timekeeping,
cell,
nucleus