Continued dilation and pressure caused by the movement of the bolus stimulates the second peristaltic wave.

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Multiple Choice

Continued dilation and pressure caused by the movement of the bolus stimulates the second peristaltic wave.

Explanation:
The statement is true. Secondary esophageal peristalsis is triggered by distension of the esophagus when the bolus continues to press on and dilate the wall as it moves. This mechanical stretch activates stretch receptors in the esophageal wall, sending reflex signals through the enteric nervous system to generate a new peristaltic wave that clears any residual bolus and relieves the distension. This reflex occurs independently of a swallow and serves to ensure the esophagus is emptied when the primary wave doesn’t fully clear the bolus.

The statement is true. Secondary esophageal peristalsis is triggered by distension of the esophagus when the bolus continues to press on and dilate the wall as it moves. This mechanical stretch activates stretch receptors in the esophageal wall, sending reflex signals through the enteric nervous system to generate a new peristaltic wave that clears any residual bolus and relieves the distension. This reflex occurs independently of a swallow and serves to ensure the esophagus is emptied when the primary wave doesn’t fully clear the bolus.

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