Q: What is the movement of muscle in the digestive system called?


Read this paragraph and choose the correct option from the provided answers:

The organs of the digestive system are lined with muscles. The muscles contract, or tighten, to push food through the system ( Figure below ). The muscles contract in waves. The waves pass through the digestive system like waves through a slinky. This movement of muscle contractions is called peristalsis . Without peristalsis, food would not be able to move through the digestive system. Peristalsis is an involuntary process, which means that it occurs without your conscious control.

 Choices:

- acid reflux

- labor contractions

- apoptosis

- peristalsis


A:
peristalsis