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Medical Definition of Cloacal membrane
1. 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)
Lexicographical Neighbors of Cloacal Membrane
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