The Straight Poop on Colonic Motility & Time Cues
There’s four phases of colonic motility … (1) Saccular Propulsion. Nonprogressive segmental contractions knead the feces into an oval shape. (2) Saccular Propulsion. Orthograde segmental contractions urge feces in the direction of the rectum. Retrograde saccular propulsion also occurs. (3) Multisaccular Propulsion. Multiple orthograde segmental contractions propel feces in the direction of the rectum. Retrograde…