Search on: UPPER ESOPHAGEAL SPHINCTER 
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Descriptor English:   Esophageal Sphincter, Upper 
Descriptor Spanish:   Esfínter Esofágico Superior 
Descriptor Portuguese:   Esfíncter Esofágico Superior 
Synonyms English:   Upper Esophageal Sphincter  
Tree Number:   A02.633.567.800.360
A03.556.875.500.360
A04.623.617.360
A14.724.617.360
Definition English:   The structure at the pharyngoesophageal junction consisting chiefly of the cricopharyngeus muscle. It normally occludes the lumen of the ESOPHAGUS, except during SWALLOWING. 
Indexing Annotation English:   diseases: coordinate IM with ESOPHAGEAL DISEASES (IM) or specific esophageal disease (IM); neoplasms: coordinate IM with ESOPHAGEAL NEOPLASMS (IM)
History Note English:   2005 
Allowable Qualifiers English:  
abnormalities anatomy & histology
blood supply chemistry
cytology drug effects
embryology enzymology
growth & development immunology
injuries innervation
metabolism microbiology
pathology physiology
physiopathology parasitology
radiography radiation effects
radionuclide imaging secretion
surgery transplantation
ultrastructure ultrasonography
virology  
Record Number:   38421 
Unique Identifier:   D049631 

Occurrence in VHL: 		 

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