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Propulsive movements are those involving persistalsis.
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Peristaltic movement initiates with an area of contraction
that is preceeded by an area of relaxation several cms downstream
- receptive relaxation. Normally this wave moves distally.
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Much weaker in the small intestine than in the oesophagus
and stomach.
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Peristaltic movements are due to a local reflex in
response to distension
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