Esophageal Sphincter, Upper

The structure at the pharyngoesophageal junction consisting chiefly of the cricopharyngeus muscle. It normally occludes the lumen of the ESOPHAGUS, except during SWALLOWING.

Year introduced: 2005

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Do not include MeSH terms found below this term in the MeSH hierarchy.

Tree Number(s): A02.633.567.800.360, A03.556.875.500.360, A04.623.617.360, A14.724.617.360

MeSH Unique ID: D049631

Entry Terms:

• Sphincter, Upper Esophageal
• Upper Esophageal Sphincter
• Cricopharyngeus
• Cricopharyngeus Muscle
• Muscle, Cricopharyngeus
• Thyropharyngeus
• Inferior Pharyngeal Constrictor
• Inferior Pharyngeal Constrictors
• Pharyngeal Constrictor, Inferior
• Pharyngeal Constrictors, Inferior
• Inferior Constrictor of Pharynx
• Pharynx Inferior Constrictor

Previous Indexing:

• Esophagus (1966-2004)

See Also:

• Laryngopharyngeal Reflux

All MeSH Categories
Anatomy Category
Musculoskeletal System
Muscles
Muscle, Skeletal
Pharyngeal Muscles
Esophageal Sphincter, Upper

All MeSH Categories
Anatomy Category
Digestive System
Gastrointestinal Tract
Upper Gastrointestinal Tract
Esophagus
Esophageal Sphincter, Upper

All MeSH Categories
Anatomy Category
Respiratory System
Pharynx
Pharyngeal Muscles
Esophageal Sphincter, Upper

All MeSH Categories
Anatomy Category
Stomatognathic System
Pharynx
Pharyngeal Muscles
Esophageal Sphincter, Upper