Question

what is the purpose of valves in the heart in the pulmonary artery and the aorta?
1) to prevent blood flow
2)to prevent blackflow of blood
3) to control the pace of the hearbeat
4 ) to allow only red blood cell through
5) to allow only white blood cell through

Answer 1

2 is the answer.

The transport of blood from the heart to the body part and the body part to the heart is carried out by the the arteries and veins respectively. The valves are present in the the Pulmonary artery in the aorta. These valves helps ine the prevent of backflow of blood. It will lead to transport the flow of one direction. It will allowed the flow of red blood cell white blood cell platelets and blood plasma in the blood in the artery. The base of the heart beat is not controlled by the valves. The Heartbeat base is controlled by the sinoatrial node which is present in the right corner of right atrium.

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