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Additional recommended knowledge
The Posterior Pituitary Gland consists mainly of neuronal projections (axons) extending from the supraoptic and paraventricular nuclei of the hypothalamus that secrete peptide hormones into the capillaries of the hypophyseal circulation.
Despite its name, the posterior pituitary gland is not a gland, per se; rather, it is largely a collection of axonal projections from the hypothalamus that terminate behind the anterior pituitary gland.
Classification of the posterior pituitary varies, but most sources include the three regions below:
A few sources include the pars intermedia as part of the posterior lobe, but this is a minority view.
Major hormones secreted
Hormones known classically as posterior pituitary hormones are synthesized by the hypothalamus. They are then stored and secreted by the posterior pituitary into the bloodstream.
Role in disease
Oversecretion of vasopressin causes the syndrome of inappropriate antidiuretic hormone.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Posterior_pituitary". A list of authors is available in Wikipedia.|