1)How do the walls of the atria compare with the walls of the ventricles? why are they different??
2)What keeps the heart valves from swinging in the wrong direction?
3)which artery is the largest?why?
4) What is the purpose of the coronary arteries?what results if there is a blockage of these arteries??

Question

1)How do the walls of the atria compare with the walls of the ventricles? why are they different??
2)What keeps the heart valves from swinging in the wrong direction?
3)which artery is the largest?why?
4) What is the purpose of the coronary arteries?what results if there is a blockage of these arteries??

anonymous · Answer

1) the walls of the atria are relatively thin compared to the walls of the ventricles because the blood being pumped out of the ventricles is pumped under much higher pressure

anonymous · Answer

2) the chordae tendinae prevent back flow

anonymous · Answer

3) the aorta is the largest artery. It is the immediate outlet for left ventricle which functions to pump blood to the entire body. As such, it pumps blood at a very high pressure.

anonymous · Answer

4) the purpose of the coronary arteries are to provide oxygenated blood to the surface of the heart. A blockage in the coronary arteries would result in a myocardial infarction (MI), commonly known as a heart attack