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Circular Muscular Layer of Colon (Descending Colon: Anterior)
Digestive System

Circular Muscular Layer of Colon (Descending Colon: Anterior)

Stratum musculare circulare coli

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Key Features/Anatomical Relations

The circular layer of smooth muscle fibers surrounds the mucosal and submucosal layers of the colon.


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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A sigmoidocele is a redundancy of the sigmoid colon that extends caudally into the cul-de-sac.

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