construct an argument how the digestive system depends on the cardiovascular system to function properly

The main function of the cardiovascular system is therefore to maintain blood flow to all parts of the body, to allow it to survive. Veins deliver used blood from the body back to the heart. When your blood circulates through your digestive system, it picks up nutrients your body absorbed from your last meal. So it is a very critical part of the digestive system since the body can't absorb nutrients to survive