Question

Which hormone is secreted by pineal gland and what is its function?

Answer 1

Answer:

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Explanation:

Pineal gland is found in brain it is a tiny endocrine glands {Ductless glands} pineal gland secrets harmone known as melatonin .It's function.

To regulate biological rythms such as...

*sleep.

*wake cycles.

The secretion of melatonin is inhibited by light and triggered by darkness........

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Answer 2

Melatonin hormone is secreted by pineal gland.

• Melatonin is an amine derived from an amino acid.
• Rate of Melatonin secretion is affected by variations of sunlight .
• The secretion of Melatonin increases in dim light and  decreases in bright light.
• It is also known as Epiphysis cerebri.
• In mammals,melatonin possibly acts as an inhibitory factor for sexual maturation and excitation.