Question

which one is the correct order of peristalsis in human digestive system?
A) Grinding-> propulsion-> retropulsion. B) retropulsion-> grinding-> propulsion. C) propulsion-> retropulsion-> grinding. D) propulsion-> grinding-> retropulsion. ​

Answer 1

Answer:

Digestion is the process of mechanically and ... Mechanical digestion in the stomach occurs via peristaltic ... This sequence of propulsion, grinding, and retropulsion .

Answer 2

Answer:

In the esophagus, two types of peristalsis occur: First, there is a primary peristaltic wave, which occurs when the bolus enters the esophagus during swallowing. The primary peristaltic wave forces the bolus down the esophagus and into the stomach in a wave lasting about 8–9 seconds.