The hypothalamus is a of the brain
situated above the hypophysis. The
gets peripheral and
central impulses that trigger
response its neurosecretory cells. The
of these cells go to the
adenohypophysis to the
hipophyseal secretions by of
negative feedback. When plasma
levels of adenohypophyseal
are too high the detects
this information and the
interruption of the ofthe
hormone. When the level of an
adenohypophyseal is low the
hypothalamus the secretion
of the .

The hypothalamic cells produce
hormones released by the
.These hormones are
transported by axons to the
hypophysis then released in the
.