Answer :
Pineal gland is the smallest organ in the human body.
The pineal gland is the smallest organ. It is located in the center of the brain. It is the primary location for the secretion of melatonin, which regulates the body's internal clock.
The pineal gland's primary function is to receive and transmit information on the current light-dark cycle from the environment by producing and secreting melatonin cyclically at night.
The pineal gland was dubbed the "third eye" for a variety of reasons, including its location deep within the brain as well as its ability to connect to light through the circadian rhythm and melatonin secretion. Many spiritual traditions believe that it connects the physical and spiritual worlds.
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