Are all of your veins like little tiny loops where blood flows through, then back to the heart, or does blood sort of push and pull it’s way back and forth through your body? Basically, how the heck does the cardiovascular system work?
In: 11
Blood “circulates” for a reason. Blood makes a round-trip through the body, depositing nutrients as it goes, returns to the heart, picks up more nutrients, and makes the trip again.
Latest Answers