What is the heart? And what are the 3 main blood vessels?
Science- Biology Watch
- Thread Starter
- 20-03-2016 13:48
- 20-03-2016 21:47
It's an organ which is a double pump, with the right side pumping blood to the lungs, and the left side pumping he rest of the body. The muscle which makes up the walls of the heart is called cardiac muscle. The vessels coming out of the heart are the pulmonary arteries, the pulmonary veins, the superior and inferior vena cava, and the aorta.