CNA Practice Test
Body systemsQuestion 775 of 1700

What is peristalsis?

  1. The grinding of food into small bits by teeth
  2. The release of saliva to moisten food in the mouth
  3. Wave-like muscle squeezes that move food
  4. The absorption of water from waste in the colon
Show answer

Correct answer: Wave-like muscle squeezes that move food

Peristaltic contractions propel the bolus to the stomach.

Source: Nursing Assistant (Reuter), 11.3: Digestive System

Practice body systems

Questions last reviewed: 18 October 2026