Morphology of the canine pyloric sphincter in relation to function.
作者： E. E. Daniel , I. Berezin , H. D. Allescher , H. Manaka , V. Posey-Daniel
DOI: 10.1139/Y89-251
关键词: Interstitial cell of Cajal 、 Vasoactive intestinal peptide 、 Anatomy 、 Pylorus 、 Sphincter 、 Antrum 、 Myenteric plexus 、 Population 、 Interstitial cell 、 Biology 、 Pathology
摘要: The ultrastructure and immunocytochemistry of the canine distal pyloric muscle loop, sphincter, were studied. Cells in this connected by gap junctions, fewer than antrum or corpus. sphincter had a dense innervation sparse population interstitial cells Cajal. Most such circular type but few myenteric plexus. Nerves sometimes associated with cell profiles, most nerves neither close to nor smooth cells. Nerve profiles characterized an unusually high proportion varicosities majority large granular vesicles. Many these shown contain material immunoreactive for vasoactive intestinal polypeptide (VIP) some substance P (SP) material. All presumed be peptidergic. VIP was present higher concentration adjacent antral duodenal ...
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