anal membrane

anal membrane
: the membranous partition occluding the fetal anus : proctodaeum

Useful english dictionary. 2012.

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  • anal membrane — the dorsal part of the cloacal membrane after its division by the urorectal septum …   Medical dictionary

  • anal folds — slight elevations flanking the anal membrane and derived from the cloacal folds; they form the margin of the anus …   Medical dictionary

  • membrane — [ mɑ̃bran ] n. f. • v. 1370; lat. membrana, de membrum « membre » 1 ♦ Anat. Mince couche de tissu qui enveloppe un organe, qui tapisse une cavité ou un conduit naturel (⇒ muqueuse). Fine membrane. ⇒ pellicule. Membranes muqueuses, séreuses,… …   Encyclopédie Universelle

  • Anal columns — Coronal section of rectum and anal canal. The interior of the anal cami and lower …   Wikipedia

  • anal canal — End portion of the alimentary canal, distinguished from the rectum by the transition from an internal mucous membrane layer to one of skinlike tissue and by its narrower diameter. Waste products move from the rectum to the anal canal. The human… …   Universalium

  • Anal sex — This article is about the human sexual act. For anal sex in non human animals, see Animal sexual behaviour. Depiction of anal sex on 510 BC Attic red figure …   Wikipedia

  • membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m …   Medical dictionary

  • Anal canal — Infobox Anatomy Name = PAGENAME Latin = canalis analis GraySubject = 249 GrayPage = 1184 Caption = Coronal section of rectum and anal canal. Caption2 = Coronal section through the anal canal. B. Cavity of urinary bladder V.D. Ductus deferens. S.V …   Wikipedia

  • Anal triangle — Infobox Anatomy Name = PAGENAME Latin = regio analis GraySubject = GrayPage = Caption = Muscles of the female perineum. (Anal triangle is roughly equal to bottom half of diagram.) Caption2 = Muscles of male perineum. (Anal triangle is roughly… …   Wikipedia

  • Cloacal membrane — Tail end of human embryo from fifteen to eighteen days old. Latin membrana cloacalis Gray s …   Wikipedia

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