翻訳と辞書 Words near each other ・ Posterior ligament of the head of the fibula ・ Posterior lobe of cerebellum ・ Posterior longitudinal ligament ・ Posterior median line ・ Posterior median sulcus ・ Posterior median sulcus of medulla oblongata ・ Posterior median sulcus of spinal cord ・ Posterior meningeal artery ・ Posterior meniscofemoral ligament ・ Posterior nasal apertures ・ Posterior nasal spine ・ Posterior nucleus of hypothalamus ・ Posterior parahippocampal gyrus ・ Posterior parietal cortex ・ Posterior perforated substance ・ Posterior pituitary ・ Posterior pole ・ Posterior polymorphous corneal dystrophy ・ Posterior predictive distribution ・ Posterior probability ・ Posterior proper fasciculus ・ Posterior rami syndrome ・ Posterior ramus of spinal nerve ・ Posterior reversible encephalopathy syndrome ・ Posterior sacrococcygeal ligament ・ Posterior sacroiliac ligament ・ Posterior scrotal arteries ・ Posterior scrotal branches ・ Posterior scrotal nerves ・ Posterior scrotal veins Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Posterior pituitary ： ウィキペディア英語版 Posterior pituitary The posterior pituitary (or neurohypophysis) is the posterior lobe of the pituitary gland which is part of the endocrine system. The posterior pituitary is not glandular as is the anterior pituitary. Instead, it is largely a collection of axonal projections from the hypothalamus that terminate behind the anterior pituitary, and is also a store for the later release of neurohypophysial hormones. ==Structure== The posterior pituitary consists mainly of neuronal projections (axons) of magnocellular neurosecretory cells extending from the supraoptic and paraventricular nuclei of the hypothalamus. These axons store and release neurohypophysial hormones oxytocin and vasopressin into the neurohypohyseal capillaries, from there they get into the systemic circulation (and partly back into the hypophyseal portal system). In addition to axons, the posterior pituitary also contains pituicytes, specialized glial cells resembling astrocytes assisting in the storage and release of the hormones. Classification of the posterior pituitary varies, but most sources include the two regions below: ;Pars nervosa: Also called the neural lobe or posterior lobe, this region constitutes the majority of the posterior pituitary and is the storage site of oxytocin and vasopressin. Sometimes (incorrectly) considered synonymous with the posterior pituitary, the pars nervosa includes Herring bodies and pituicytes. ;Infundibular stalk: Also known as the infundibulum or pituitary stalk, the infundibular stalk bridges the hypothalamic and hypophyseal systems. The median eminence is only occasionally included as part of the posterior pituitary. Other sources specifically exclude it from the pituitary. A few sources include the pars intermedia as part of the posterior lobe, but this is a minority view. It is based upon the gross anatomical separation of the posterior and anterior pituitary along the cystic remnants of Rathke's pouch, causing the pars intermedia to remain attached to the neurohypophysis. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Posterior pituitary」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.