How does your digestive system help to keep your cells alive and healthy?

Question

How does your breathing system help you to keep your cells alive and healthy?

How does yoru circulatory system help you keep your cells alive and healthy?

Thanks for any helps

Answer 1

Your digestive system breaks down food into components that can be absorbed by your cells in your intestines.  This provides energy and vitamins to your cells.

Your respiratory system delivers oxygen and removes carbon dioxide wastes.  The oxygen is necessary to complete cellular respiration and get energy out of  molecules.

Your circulatory actually brings the oxygen to your cells.