翻訳と辞書 Words near each other ・ Loop interchange ・ Loop invariant ・ Loop inversion ・ Loop jump ・ Loop knitting ・ Loop line ・ Loop line (railway) ・ Loop Live ・ Loop Loop, Washington ・ Loop Maintenance Operations System ・ Loop Management System ・ Loop mark ・ Loop Mobile ・ Loop modeling ・ Loop nest optimization ・ Loop of Henle ・ Loop optimization ・ Loop Parkway ・ Loop performance ・ Loop quantum cosmology ・ Loop quantum gravity ・ Loop recorder ・ Loop recording ・ Loop representation in gauge theories and quantum gravity ・ Loop Retail Historic District ・ Loop rock ・ Loop scheduling ・ Loop Service (Portland Streetcar) ・ Loop space ・ Loop splitting 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 Loop of Henle ： ウィキペディア英語版 Loop of Henle In the kidney, the loop of Henle (or Henle's loop, nephron loop 〔http://www.unifr.ch/ifaa/Public/EntryPage/ViewTH/THh306.html〕 or its Latin counterpart ''ansa nephroni'') is the portion of a nephron that leads from the proximal convoluted tubule to the distal convoluted tubule. Named after its discoverer, the German anatomist Friedrich Gustav Jakob Henle, the loop of Henle's main function is to create a concentration gradient in the medulla of the kidney.〔 By means of a countercurrent multiplier system, which utilizes electrolyte pumps, the loop of Henle creates an area of high urea concentration deep in the medulla, near the papillary duct in the collecting duct system. Water present in the filtrate in the papillary duct flows through aquaporin channels out of the duct, moving passively down its concentration gradient. This process reabsorbs water and creates a concentrated urine for excretion.〔 ==Structure== The loop of Henle can be divided into four parts: *Thin descending limb of loop of Henle :The thin descending limb has low permeability to ions and urea, while being highly permeable to water. The loop has a sharp bend in the renal medulla going from descending to ascending thin limb. *Thin ascending limb of loop of Henle :The thin ascending limb is impermeable to water, but it is permeable to ions. *Thick ascending limb of loop of Henle :Sodium (Na+), potassium (K+) and chloride (Cl−) ions are reabsorbed from the urine by secondary active transport by a Na-K-Cl cotransporter (NKCC2). The electrical and concentration gradient drives more reabsorption of Na+, as well as other cations such as magnesium (Mg2+) and calcium (Ca2+). *Cortical thick ascending limb :The cortical thick ascending limb drains urine into the distal convoluted tubule.〔 The tissue type of the loop is simple squamous epithelium. The "thick" and "thin" terminology does not refer to the size of the lumen, but to the size of the epithelial.〔Human Anatomy 7th edition (p.705)〕 The loop is also sometimes called the Nephron loop. 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「Loop of Henle」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.