pineal gland
pineal gland A small gland that is located near the center of the brain. This gland secretes melatonin, and it may therefore be part of the body’s sleep-regulation apparatus. Also known as pineal body.
pineal gland A small gland that is located near the center of the brain. This gland secretes melatonin, and it may therefore be part of the body’s sleep-regulation apparatus. Also known as pineal body.