In complex animals, the circulatory system provides the mechanism by which the cells can exchange the nutrients for wastes.
The circulatory system (cardiovascular system) is to pumps blood from the heart to the lungs and to get the oxygen. The heart then sends the oxygenated to blood through the arteries to the rest of the body. The veins also carry oxygen-poor blood back to the heart and to start the circulation process over.
The circulatory system has delivers oxygen and nutrients to cells and to takes away the wastes. The heart is pumps oxygenated and deoxygenated blood on the different sides. The types of the blood vessels include the arteries, also capillaries and veins.
To know more about circulatory system visit:
https://brainly.com/question/10103458
#SPJ4
