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Title: [Vascularization of the pharyngo-esophageal transition zone]
Authors: Ramaekers, Dirk
Mebis, Joseph
Geboes, Karel
Desmet, Valeer #
Issue Date: 1990
Series Title: Acta Gastro-Enterologica Belgica vol:53 issue:4 pages:376-85
Abstract: The arterial blood supply and the venous drainage of the area around the pharyngo-oesophageal sphincter are still virtually unknown. We performed vascular injections with a gelatin-india ink solution on autopsy specimens. After fixation the specimens were dissected under a stereomicroscope. From our anatomic studies we conclude that the inferior thyroid artery gives rise to a special branch, the "laryngopharyngeal artery", that supplies the pharyngo-oesophageal sphincter through numerous transversal branches. This density can be explained by the oxidative metabolism of the cricopharyngeal muscle. This structural adaptation is necessary for the maintainance of a continuous tone within the pharyngo-oesophageal sphincter. The pharyngo-oesophageal venous plexus in the laryngopharynx and cervical oesophagus provides rigidity to the surrounding corium and so ensures the integrity of the corium during sphincter relaxation.
ISSN: 0001-5644
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Translational Cell & Tissue Research
Faculty of Medicine - miscellaneous
Department of Public Health miscellaneous
# (joint) last author

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