The
pineal gland is a tiny structure located at the
base of the brain.
Link to graphic showing the location of the pineal and other
endocrine glands (92K).
Its principal
hormone is melatonin, a derivative of the
amino acid tryptophan.
Full article >>>pineal gland(pin-ee-ul)
A small endocrine gland on the
dorsal surface of the vertebrate
forebrain; secretes the
hormone melatonin, which regulates body functions related to seasonal day length.
Full article >>>pineal gland: a
human endocrine gland in the
midbrain that regulates
mating behaviors and day-night cycles.
pinocytosis: when the
vesicle formed from
endocytosis contains droplets of fluid.
Full article >>>pineal gland A small gland located between the cerebral hemispheres of the brain that secretes melatonin.
pioneer
community The initial
community of
colonizing
species.
Full article >>>pineal gland An endocrine gland located near the midline of the brain that produces melatonin, a
hormone involved in biological rhythms, particularly in annual cycles.
Pineal pinea = a pine cone.
pinfeather See filoplume feather.
Full article >>>It appears that the SCN takes the information on day length from the
retina, interprets it, and passes it on to the
pineal gland (a pea-like structure found on the epi
thalamus), which then secretes the
hormone melatonin in response.
Full article >>>[Gr. epi - on, upon; Gr. physis - growth]. An evagination of the prosencephalon (
forebrain) which later forms the
pineal gland.
Full article >>>'"/>