| cloaca | 1. <zoology> A common passage for faecal, urinary and reproductive discharge in most lower vertebrates. 2. <embryology> The terminal end of the hindgut before division into rectum, bladder and genital primordia. 3. <pathology> An opening in the involucrum of a necrosed bone. (18 Nov 1997) |
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| cloacal | Pertaining to the cloaca. (05 Mar 2000) |
| cloacal exstrophy | Congenital anomaly with two exstrophied bladder units separated by an exstrophied segment of intestine, which is usually caecum, receiving ileum superiorly and continuing distally to blend microcolon. A number of variants of anatomic disarray can occur. (05 Mar 2000) |
| cloacal membrane | A transitory membrane in the caudal area of the ventral wall of the embryo, separating the endodermal from the ectodermal cloaca; it is divided into anal and genitourinary membrane's that break down during the eighth to ninth week to establish the external opening for the alimentary and genitourinary tracts. (05 Mar 2000) |
| cloacal plate | A plate, composed of a layer of cloacal endoderm in contact with a layer of proctodeal ectoderm, which subsequently ruptures, forming the anal and urogenital openings of the embryo. (05 Mar 2000) |
| cloacal theory | The belief sometimes held by neurotic adults or children that a child is born, as a stool is passed, from a common opening. (05 Mar 2000) |
| persistent cloaca | A condition in which the urorectal fold has failed to divide the cloaca of the embryo into rectal and urogenital portions. Synonym: sinus urogenitalis, urogenital sinus. (05 Mar 2000) |
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| ectodermal cloaca | The proctodeum of the embryo. (05 Mar 2000) |
| endodermal cloaca | Terminal portion of the hindgut internal to the cloacal membrane of the embryo. (05 Mar 2000) |
| exstrophy of the cloaca | A developmental anomaly in which an area of intestinal mucosa is interposed between two separate areas of the urinary bladder. Synonym: ectopia cloacae. (05 Mar 2000) |
Synonyms : Cloacas
| cloaca |
sewer: a waste pipe that carries away sewage or surface water
Ãâó: wordnet.princeton.edu/perl/webwn
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| cloacal aperture |
the posterior opening on the body surface of the cloaca in vertebrates such as birds, reptiles, fish, and amphibians. Called also vent.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| cloacal |
A chamber in most vertebrates (except mammals) into which the intestinal, reproductive, and urinary systems empty.
Ãâó: www.geocities.com/Heartland/Bluffs/8071/reptile/te...
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| cloaca |
A chamber in most vertebrates (except mammals) into which the intestinal, reproductive, and urinary systems empty.
Ãâó: www.geocities.com/Heartland/Bluffs/8071/reptile/te...
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| cloaca |
The terminal end of the hindgut before division into the rectum and urogenital sinus. The dorsal part of the cloaca differentiates into the rectum and anal canal, and the ventral part differentiates into the urogenital sinus.
Ãâó: www.nature.com/nrg/journal/v4/n12/glossary/nrg1225...
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| cloaca | a waste pipe that carries away sewage or surface water |
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