The structure of the heart is what makes it an efficient pump. It works continuously without tiring, and it receives electric signals every second and pumps blood nonstop.
The heart is a muscle.
The left and right ventricles, which when they contract pump blood into the systemic and pulmonary curcuits.
The phrase "does the heart affected" makes no sense.
It makes the heart pump slightly faster
fat
Veins do not pump, they are passive. They carry blood back to the heart which is the pump.
The blood in your lungs gives out numerals that help your heart pump to everything else.
increases the heart rate
Absolutely - since the heart is the pump that makes the circulatory system work !
Your heart, and oxygen that makes the brain make the heart pump. The veins and arteries ... some of them constrict to make blood move through the body.
no it doesnt or you would be breathing in blood and that makes no sense.
heart pump