Digestive System
Circular Muscular Layer of Colon (Sigmoid Colon: Posterior)
Stratum musculare circulare coli
Read moreStructure/Morphology
The muscular layer of the colon, like the small intestine, consists of an inner circular layer and an outer longitudinal layer of smooth muscle fibers.
Related parts of the anatomy
Key Features/Anatomical Relations
The circular layer of smooth muscle fibers surrounds the mucosal and submucosal layers of the colon.
Function
The coordinated contractions of the longitudinal and circular muscular layer of the colon are responsible for producing peristaltic contractions of the gut, thus propelling the ingested substance through the lumen of the gut.
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Sigmoid
A sigmoidocele is a redundancy of the sigmoid colon that extends caudally into the cul-de-sac.
