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

Circular Muscular Layer of Colon (Descending Colon: Posterior)

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.

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

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The sigmoid-like function due to electrical resonance is as follows:(6)gx=Vβx−1βxwhere β is the electrical resonance amplification gain, which is a function of the circuit electrical damping condition, the MEMS deflection, and the difference between the input voltage frequency and the circuit resonance frequency.

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