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Question

Hormone secreted by pineal gland is ____________


A

Estrogen

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B

Melatonin

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C

Insulin

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D

Glucagon

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Solution

The correct option is B

Melatonin


The pineal gland is a tiny endocrine gland found in the brain. It produces and secretes the melatonin, which is a hormone that helps regulate biological rhythms such as sleep and wake cycles. The secretion of melatonin is inhibited by light and triggered by darkness


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