This anatomical body produces the chemical DMT, a psychedelic drug that has been linked to certain types of dreams.  
This anatomical body produces the chemical DMT, a psychedelic drug that has been linked to certain types of dreams.  Also known as the epiphysis, it is known to have a completely different function in ancient amphibians, where it acted as a light receptor in an orifice in the top of the skull, leading to it occasionally being known as the "third eye."  In humans it regulates the circadian rhythm via the secretion of its chief product.  FTP, name this small endocrine gland that produces melatonin.
This anatomical body produces the chemical DMT, a psychedelic drug that has been linked to certain types of dreams.  
pineal gland