2.28 Peristalsis

explain how and why food is moved through the gut by peristalsis

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  • The gut wall is composed of muscle tissues, when the muscles contracts the diametre decreases
  • The food enters the gut and stretches the walls of the gut causing reflect behind the bolus. The contration pushes the bolus downwards and stretches the gut wall which then contrats and sqeezes the bolus downwards again

 

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