Which of the following statements about peristalsis is true?
Understand the Problem
The question is asking about peristalsis and its characteristics, presenting multiple statements for evaluation to determine which are true regarding the process of peristalsis.
Answer
It is the alternating contraction of muscle layers in the GI tract wall.
The final answer is: Peristalsis is the alternating contraction of muscle layers in the GI tract wall that propels materials through the tract.
Answer for screen readers
The final answer is: Peristalsis is the alternating contraction of muscle layers in the GI tract wall that propels materials through the tract.
More Information
Peristalsis involves wave-like involuntary contractions that move food down the digestive tract, from the esophagus to the intestines.
Tips
A common mistake is confusing peristalsis with segmentation, which is involved in mixing rather than propulsion.
Sources
- Peristalsis: Definition, Function & Problems - Cleveland Clinic - my.clevelandclinic.org
- Peristalsis - Health Video: MedlinePlus Medical Encyclopedia - medlineplus.gov
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