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.

Synonym(s): lobus nervosus [TA], lobus posterior hypophyseos ☆ , pars nervosa hypophyseos ☆ , nervous lobe, neural part of hypophysis, posterior lobe of hypophysis

[neuro- + hypophysis]

Farlex Partner Medical Dictionary © Farlex 2012

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.

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.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

neurohypophysis

see PITUITARY GLAND.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

The nerve fibers of the neurohypophysis mainly started from the hypothalamus, and branchily radiated out from internal neurohypophysis to external neurohypophysis.

Morfologia y Ultraestructura de la Hipofisis en Camellos Bactrianos (Camelus bactrianus)

GCT of the neurohypophysis revealed immunopositivity for S-100 and GFAP, suggesting that it might originate from Schwann cells as the extracranial GCT.

Sellar and Suprasellar Granular Cell Tumor of Neurohypophysis

An equivalent concentration of oxytocin is found in the neurohypophysis and plasma of both sexes [26] suggests that oxytocin has further physiological functions.

Possible central role of oxytocin in neurobehaviour of male rats and mice

Astroglial modulation of neurotransmitter/peptide release from the neurohypophysis. J.

Dromedary vimentin hypothalamo-neurohypophysal system expression may help adapt to severe arid environment

This type is readily distinguished not only from pituitary adenoma based on its morphologic features, but also from sellar region meningiomas or pituicytomas, spindle cell oncocytomas, or granular cell tumors of neurohypophysis. However, examples with a paucity of wet keratin (Figure 7, i) or those with such abundant wet keratin that the epithelium is overshadowed (Figure 8, a) can be more challenging.

An Algorithmic Approach to Sellar Region Masses

In the magnocellular neurosecretory system (MNS), CNTF is exclusively expressed in astrocytes of the supraoptic nucleus (SON), which are predominately located in the ventral glial limitans (VGL), and perivascular cells of the neurohypophysis. While the CNTF protein and mRNA levels have been demonstrated to be upregulated in response to injury in vivo (1) and CNTF is widely known to be a neuronal survival factor in vitro, there is a caveat: CNTF lacks a secretory signal sequence and has yet to be demonstrated to be secreted from uninjured cells in vivo.

An activity-dependent change in ciliary neurotrophic factor expression in the rat magnocellular neurosecretory system

Another interesting observation is the localization of AQP4 in the neurohypophysis, where osmoreceptors control the release of ADH by an undefined process.

CLS meets the aquaporin family: clinical cases involving aquaporin systems

Role of neurohypophysis in the pathogenesis of hypertension and some allied disorders associated with aging.

Age-associated alterations in thirst and arginine vasopressin in response to a water or sodium load

Un fenomeno similar acontece con las dos porciones de la hipofisis: Adenohypophysis y Neurohypophysis, pues el primer termino utiliza la particula adeno que en griego significa glandula, para denominar a la porcion anterior de la hipofisis que fisiologicamente participa del control hormonal; el segundo termino, por su parte, utiliza la particula neuro, que en griego significa nervio, para denominar a la porcion posterior de la hipofisis que constituye parte del sistema nervioso.

Lexema phy-sis [phrase omitted] in Terminologia Anatomica/ Lexema phy-sis [phrase omitted] en Terminologia Anatomica

Copeptin, a 39amino acid glycopeptide that comprises the C-terminal part of the AVP precursor, is cosecreted with AVP from the neurohypophysis and is a stable and sensitive surrogate marker for AVP release, making it much easier to measure (8).

Copeptin Associates with Cause-Specific Mortality in Patients with Impaired Renal Function: Results from the LURIC and the 4D Study

Bright spot was not present on the imaging of neurohypophysis by MRI.

Clinical and Molecular Genetic Analysis in Three Children with Wolfram Syndrome: A Novel WFS1 Mutation (c.2534T>A)

Pituicytoma is a distinct low-grade glioma arising from pituicytes of the neurohypophysis and infundibulum.

Neuroimaging Features of Pituicytomas