How do the muscular system and digestive system relate to one another? question 1 options: if your body needs more food, and you cannot eat. the muscular system the digestive system by pulling it from your skeletal system. the muscular system keeps bad food out of your digestive system and leads it straight to your excretory system. the muscular system moves the food through the digestive system so nutrients can get to all parts of your body. the muscular system looks similar to the digestive system.