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Avian Vent and Cloaca - Anatomy & Physiology
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Revision as of 11:52, 29 July 2008
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11:52, 29 July 2008
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**Short
**Short
**Ends at the vent
**Ends at the vent
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**Opening in the dorsal wall leads to the cloacal bursa
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**Opening in the dorsal wall leads to the cloacal bursa
of Fabricus
==The Vent==
==The Vent==
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*During insemination the vent is inverted
*During insemination the vent is inverted
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==Histology==
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*Columnar epithelium
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*Stratified squamous epithelium at external opening of vent and in the caudal proctodeum
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*Broad folds of mucous membrane
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*Crypts present which branch near their base
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*Lymphoid tissue present in the submucosa
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*The fold of mucous membrane covering the entrance to the bursa is composed of columnar epithelium, muscle, connective tissue and goblet cells
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*2 layers of tunica muscularis
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**Inner circular
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**Outer longitudinal
==Species Differences==
==Species Differences==
Nabrown
3,326
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