Serotonin and Melatonin are hormones, secreted by

Options

A. Pancreas
B. Pineal body
C. Pituitary gland
D. Thymus

Answer

B

Explanation

The pineal gland secretes melatonin that helps to contribute to the setting of the body’s biological clock (circadian rhythm.
Serotonin is also found in pineal gland. It is a neurotransmitter that is involved in the transmission of nerve impulses and is known to influence the emotional state of a person.