Melatonin is released by brain (epiphysis). It is connected with rythms of arousal and sleep.
The pineal gland :)
Pineal.
The pineal gland (or, epiphysis) synthesizes and secretes melatonin.
pineal gland
secretes melatonin
pineal gland
No, the pineal gland secretes melatonin. The pancreas secretes insulin.
No, the pineal gland secretes melatonin. The adrenal gland secretes epinephrine.
catecholimides
small intestine
the ovaries
the pineal gland.
Suprachiasmatic nucleus