neurohypophysis


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neurohypophysis

 [noor″o-hi-pof………´…ĭ-sis]
the posterior lobe of the pituitary gland. adj., adj neurohypophys´eal.
The neurohypophysis (posterior pituitary gland). From Applegate, 2000.

neu·ro·hy·poph·y·sis

(nū'rō-hī-pof'i-sis), [TA]
Complex comprising the infundibulum and the nervous lobe of the hypophysis.
See also: pituitary gland.
[neuro- + hypophysis]

neurohypophysis

/neu·ro·hy·poph·y·sis/ (noor″o-hi-pof´ĭ-sis) the posterior (or neural) lobe of the pituitary gland, which stores oxytocin and vasopressin.neurohypophys´ial

neurohypophysis

(no͝or′ō-hī-pŏf′ĭ-sĭs, -hĭ-, nyo͝or′-)
n. pl. neurohypophy·ses (-sēz′)
The posterior portion of the pituitary gland, having a rich supply of nerve fibers and releasing oxytocin and vasopressin.

neu′ro·hy′po·phys′e·al, neu′ro·hy′po·phys′i·al (-hī′pə-fĭz′ē-əl, -hĭp′ə-, -hĭ-pŏf′ə-sē′əl) adj.

neurohypophysis

[-hīpof′isis]
Etymology: Gk, neuron + hypo, under, phyein, to grow
the posterior lobe of the pituitary gland that is the release point of antidiuretic hormone (ADH) and oxytocin. Nervous stimulation from the hypothalamus controls the release of the substances into the blood. When stimulated by the hypothalamus, the neurohypophysis releases ADH by an increase in the osmotic pressure of extracellular fluid in the body. The hormone acts on the cells in the distal and collecting tubules of the kidneys, making them more permeable to water and thus reducing the volume of urine. The neurohypophysis releases oxytocin under appropriate stimulation from the hypothalamus. Oxytocin produces powerful contractions of the pregnant uterus and causes milk to flow from lactating breasts. Stimulation of the nipples of the breast by a nursing infant triggers the release of this hormone. Also called posterior pituitary gland. Compare adenohypophysis.

neu·ro·hy·poph·y·sis

(nūr'ō-hī-pof'i-sis) [TA]
A neuroendocrine structure suspended from the base of the hypothalamus. It is composed of the infundibulum and the posterior lobe of the hypophysis.
See also: hypophysis
Synonym(s): lobus posterior hypophyseos [TA] , posterior lobe of hypophysis.

neurohypophysis

see PITUITARY GLAND.

neurohypophysis

the posterior lobe of the pituitary gland. It stores and secretes two hormones, oxytocin and antidiuretic hormone (vasopressin), which are released in response to neural stimulation.
References in periodicals archive ?
We speculate that myocardial necrosis in humans might lead to vasopressin release independently of neurohypophysis release.
The identification of neurohypophysis should also be documented.
Astroglial modulation of neurotransmitter/peptide release from the neurohypophysis.
It is well known that oxytocin is secreted in neurohypophysis in both male and female, have a significant role in control of behavior but its role in male behavior has not been studied in detail as much as studied in the behavior of females.
Another interesting observation is the localization of AQP4 in the neurohypophysis, where osmoreceptors control the release of ADH by an undefined process.
Disorders of the neurohypophysis, in Braunwald E, Fauci AS, Kasper DL, et al (eds): Harrison's Principles of Internal Medicine.
Yamashita from the Tokyo Medical and Dental University, received the award for the best poster at the World Congress of Neurohypophysis Research (WCNR) in Tokyo, Japan.
Copeptin, the C-terminal part of the vasopressin prohormone, is secreted stoichiometrically with arginine-vasopressin from the neurohypophysis.
By their morphology and immunostaining pattern, pituicytomas are thought to arise from pituicytes, specialized glial cells of the neurohypophysis.
The neurohypophysis is made up of the pars nervosa, infundibular stalk and the infundibula proper.
It has been suggested that V2 receptors, not V1 receptors, are localized near the anterio-ventral third ventricle and the paraventriculal, supraoptic, suprachiasmatic nuclei, and neurohypophysis of the hypothalamus (Cheng & North, 1989; Gerstberger & Fahrenholz, 1989).