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Paraventricular nucleus of hypothalamus : ウィキペディア英語版
Paraventricular nucleus of hypothalamus

The paraventricular nucleus (PVN, PVA, or PVH) is a neuronal nucleus in the hypothalamus. It contains groups of neurons that can be activated by stressful and/or physiological changes. Many PVN neurons project directly to the posterior pituitary where they release oxytocin or vasopressin into the general circulation. Other PVN neurons control various anterior pituitary functions, while still others directly regulate appetite and autonomic functions in the brainstem and spinal cord.
==Location==
The paraventricular nucleus lies adjacent to the third ventricle. It lies within the periventricular zone and is not be confused with the periventricular nucleus, which occupies a more medial position, beneath the third ventricle. The PVN is highly vascularised and is protected by the blood–brain barrier, although its neuroendocrine neurons extend to sites (in the median eminence and in the posterior pituitary) beyond the blood–brain barrier.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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