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Noun, pl. Neurohypophyses

1. Comprises the posterior lobe of the pituitary gland and is part of the endocrine system. 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. It is where neurohypophysial hormones are stored and released. (

2. (Anatomy) The posterior lobe of the pituitary gland, responsible for the release of oxytocin and antidiuretic hormone (ADH), also called vasopressin. (

3. The portion of the pituitary gland that is derived from the embryonic brain, is composed of the infundibulum and neural lobe, and is concerned with the secretion of various hormones. (

4. The posterior lobe of the pituitary body; primarily glandular in nature. (

Syn: posterior pituitary, posterior pituitary gland, pars nervosa

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