Proctodeum

A proctodeum is the back ectodermal part of an alimentary canal. It is created during embryogenesis by a folding of the outer body wall. It will form the lower part of the anal canal, below the pectinate line, which will be lined by stratified squamous non-keratinized (zona hemorrhagica) and stratified squamous keratinized (zona cutanea) epitheliu...
Found on http://en.wikipedia.org/wiki/Proctodeum

proctodeum

(prok″to-de┬┤әm) the ectodermal depression of the caudal end of the embryo, which becomes the anal canal; called also anal pit.
Found on http://www.encyclo.co.uk/local/21001

proctodeum

1. An ectodermally lined depression under the root of the tail, adjacent to the terminal part of the embryonic hindgut; at its bottom, proctodeal ectoderm and cloacal endoderm form the cloacal plate. When this epithelial plate ruptures, the anal and urogenital external orifices are established. ... Synonym: anal pit. ... 2. Terminal portion of the ...
Found on http://www.encyclo.co.uk/local/20973

proctodeum

Type: Term Pronunciation: prok′tō-dē′ŭm, -dē′ă Definitions: 1. Terminal portion of the insect alimentary canal, extending from the pylorus (area of malpighian tubule attachment) to the anal opening; in certain diptera (flies) and other insects, the proctodeum is divided into a tubular anterior intestine an...
Found on http://www.medilexicon.com/medicaldictionary.php?t=72501
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