urorectal septum

urorectal septum
the caudally and outwardly growing wedge of endoderm-covered mesoderm that divides the cloaca into the urogenital sinus and rectum, and the cloacal outlet into the urogenital orifice and anus; called also urorectal fold and cloacal s.

Medical dictionary. 2011.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Urorectal septum — Infobox Embryology Name = PAGENAME Latin = GraySubject = 241 GrayPage = 1109 Caption = Cloaca of human embryo from twenty five to twenty seven days old. Caption2 = System = CarnegieStage = Days = 32 Precursor = GivesRiseTo = MeshName = MeshNumber …   Wikipedia

  • Septum — A word borrowed from the Latin "saeptum" meaning a "dividing wall or enclosure." * * * 1. [TA] A thin wall dividing two cavities or masses of softer tissue. See septal area, transparent s.. 2. In fungi, a wall; usually a cross …   Medical dictionary

  • urorectal fold — see under septum …   Medical dictionary

  • cloacal septum — urorectal s …   Medical dictionary

  • 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

  • Embryology — 1 morula, 2 blastula 1 blastula, 2 gastrula with blastopor …   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

  • Mesentery — Horizontal disposition of the peritoneum in the lower part of the abdomen. The mesentery is marked with red …   Wikipedia

  • Thyroglossal duct — Duct not labeled, but arises nearest to region identified as pyramidal lobe ) …   Wikipedia

  • Midgut — The midgut and hindgut. Latin mesenteron Carnegie stage …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”