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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
anococcygeus muscle 
appendix smooth muscle circular layer 
esophagus smooth muscle circular layer 
external anal sphincter 
internal anal sphincter 
The smooth muscle ring, formed by an increase of the circular muscle fibers of the rectum, situated at the upper end of the anal canal, internal to the outer voluntary external anal sphincter.
large intestine smooth muscle circular layer +  
perineal body smooth muscle muscle tissue 
rectum smooth muscle tissue +  
small intestine smooth muscle circular layer 
sphincter pupillae 
stomach smooth muscle circular layer 

Synonyms
Exact Synonyms: circular layer of anal muscularis externa ;   circular layer of muscularis externa of anal canal ;   circular layer of muscularis propria of anal canal ;   circular muscle layer of anal canal
Xrefs: EMAPA:18266 ;   FMA:15710 ;   MA:0001534 ;   NCI:C32833 ;   UMLS:C0224394 ;   Wikipedia:Internal_anal_sphincter
Definition Sources: MGI:anna, MP:0009055

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