Final answer:
The muscular system helps move food through the digestive system via a process called peristalsis, which involves wave-like muscle contractions.
Step-by-step explanation:
The body system that helps to move the food we eat through the digestive system is the muscular system. The organs of the digestive system are lined with muscles. These muscles contract in a wave-like motion in a process called peristalsis. Peristalsis is vital for pushing the food ahead through the digestive tract. This movement is an involuntary process, meaning it happens without our conscious control.
After food is digested, absorption takes place in the small intestine where nutrients enter the blood. Remaining waste materials then pass through the large intestine to be excreted. The muscular system, along with others like the cardiovascular system, plays a critical role in healthy digestion and overall function of the body's digestive system.