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Ans. (2) Four

Peristalsis refers to the process by which the food is transported from the buccal cavity to the stomach with the help of the expansion and contraction of the muscles present in the oesophagus. After the peristaltic movement in the oesophagus, food particles move down the oesophagus and reach the stomach.

The following features are seen in muscle fibres involved in peristalsis (i.e smooth muscles).
  1. Uninucleated
  2. Fusiform
  3. Involuntary
  4. Gap junctions

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