A morphometric study of the rectocoprodeal sphincter in the domestic duck
Mahdi, A.H.; McLelland, J.
Journal of Anatomy 165: 269-274
1989
ISSN/ISBN: 0021-8782 PMID: 17103621 Document Number: 347494
A study of the circular muscle at the rectocoprodeal junction in the domestic duck (Anas platyryhnchos) showed that the muscle formed a slightly thickened obliquely orientated ring and that the density of innervation including the total number of axon profiles and the number of vesiculated axon profiles was significantly higher in the thickened ring than in the adjacent circular muscle. The findings indicate the existence of a rectocoprodeal sphincter in the duck.
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