FTP, identify this gland also known as the "third eye" and named for its pine-cone shape.
In birds this body contains magnetic material needed for navigation.  Also called the epiphysis cerebri, it is largest in children, shrinking during puberty and calcifying with increasing age.  In all humans it appears to play a major role in sexual development and sleep patterns.  It may indirectly be the cause of Seasonal Affective Disorcer because it is photosensitive and increases the release of melatonin during the winter.  FTP, identify this gland also known as the "third eye" and named for its pine-cone shape.
In birds this body contains magnetic material needed for navigation.  
pineal gland