The heart pumps blood throughout the body and the stomach helps us digest the food we eat. How do the muscles help these two organs perform their function? Both the heart and stomach continue to work on their own by contracting and shortening their muscles.

The muscles of the heart and stomach contract and relax when we tell them to do so.

The muscles of the heart and stomach contract and relax without us thinking about them.

When the muscles of the heart and stomach contract, they pull on the bones and make them move.