First slide

Human Endocrine System

Question

Circadian rhythm is maintained by

Easy

A

thymosin secreted by pineal gland
B

melatonin secreted by thymus
C

thymosin secreted by thymus
D

melatonin secreted by pineal gland

Solution

The pineal gland is located on the dorsal side of forebrain. Pineal secretes a hormone called melatonin. Melatonin plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body.

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