Terminology Service for NFDI4Health
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stomach smooth muscle circular layer

Go to external page http://purl.obolibrary.org/obo/UBERON_0008857

The middle layer of the muscularis; it is continuous with the circular layer of the esophagus, but is absent in the fundus and lies concentric to the longitudinal axis of the stomach; the circular layer is normally tonically constricted forming a functional pyloric sphincter, which controls the movement of chyme into the duodenum [ ]

Term info

Label

stomach smooth muscle circular layer

Synonyms
  • circular layer of gastric muscularis
  • circular muscle layer of stomach
  • middle circular muscle layer of stomach
  • stratum circulare (tunica muscularis)(gaster)
  • stratum circulare gastris
  • stratum circulare tunicae muscularis gastricae
database cross reference
Subsets

pheno_slim

latin term
stratum circulare tunicae muscularis gastricae [ FMA : 14911 FMA : TA ]

external ontology notes

FMA and MP disagree as to whether the circular layer is middle or innermost

function notes

This layer wraps in a circular orientation around the pylorus, and is held in a constricted state normally. The normal constriction of this muscle is what creates the pyloric sphincter, which controls the movement of chyme into the duodenum. This layer is concentric to the longitudinal axis of the stomach. (note: chyme is a thick and acidic mixture of acidic digestive fluids and partially digested food, which moves from the stomach to the small intestine as digestion moves along the digestive tract.)

id

UBERON:0008857