rectal valve

rectal valve
a thin diaphragm located in the posterior fifth of the intestine of some Centrolophidae, e.g. Seriolella punctata, Schedophilus huttoni and Psenes pellucidus, or in others a sphincter-like constriction, e.g. Seriolella brama. A deep purple fluid was confined to the valve in S. punctata, but was found throughout the intestine in the other two species referred to. The fluid might be used to void a coloured cloud to distract or deter a predator

Dictionary of ichthyology. 2009.

Игры ⚽ Поможем написать курсовую

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  • rectal valve — n any of three or four crescentic folds projecting into the cavity of the rectum …   Medical dictionary

  • rectal valve — (ARTHROPODA: Insecta) A circular or lobate fold of the hind intestine separating the distal intestine and rectum …   Dictionary of invertebrate zoology

  • rectal valve — noun : any of three or four crescentic folds projecting into the cavity of the rectum …   Useful english dictionary

  • valve of houston — ˈ(h)yüstən, ˈhüs , ˈhau̇s Usage: usually capitalized H Etymology: after John Houston died 1845 Irish physician : rectal valve …   Useful english dictionary

  • valve — 1. A fold of the lining membrane of a canal or other hollow organ serving to retard or prevent a reflux of fluid. 2. Any formation or reduplication of tissue, or flaplike structure …   Medical dictionary

  • Ileocecal valve — Interior of the cecum and lower end of ascending colon, showing colic valve. ( Colic valve is an older term for the ileocecal valve.) …   Wikipedia

  • Houston valve — Infobox Anatomy Name = PAGENAME Latin = plicae transversae recti GraySubject = 249 GrayPage = 1183 Caption = Coronal section of rectum and anal canal. Caption2 = Anatomy of the anus and rectum System = MeshName = MeshNumber = DorlandsPre = p 24… …   Wikipedia

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  • Mohamed Ghonim — Ghonim, Mohammed A محمد غنيم Born 17th March, 1939 Mansoura, Egypt Nationality Egyptian Fields …   Wikipedia

  • fold — 1. A ridge or margin apparently formed by the doubling back of a lamina. SYN: plica. 2. In the embryo, a transient elevation or reduplication of tissue in the form of a lamina …   Medical dictionary

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