Ventromedial nucleus
Dorsomedial nucleus
Arcuate nucleus
Hypothalamus
Supraoptic nucleus
Paraventricular nucleus
RH, IH
ADH
Oxytocin
Superior hypo-physial artery
Axoplasmic transport by neurosecretory nerve cells
Release of RHs, IHs, ADH, NE, NPY, and
other transmitters
Portal veins
- RH induce release of anterior pituitary hormones
IH inhibit their release
Inferior hypo-physial artery
RH. IH.
ADH
Release of
ADH, oxytocin
Pituitary veins
Posterior pituitary (neurohypophysis)
Anterior pituitary (adenohypophysis)
Anterior pituitary hormones
ACTH
PRL
GH
LH
TSH
a-MSH
FSH
B-endorphin
Posterior pituitary hormones
ADH, #oxytocin
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