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