Chemical Coordination and IntegrationHard

Question

Melatonin is secreted by

Options

A.skin
B.thymus
C.pituitary
D.pineal gland

Solution

The pineal gland (epiphysis) secretes the hormone melatonin which regulates the working of gonads by inhibiting gonadotropins and their effects. Its production is inhibited by exposure of animal to light.

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