Question

Which one of the following represents the correct order of flow of blood once it
enters the heart?
Left atrium, left ventricle, lungs, right atrium, right ventricle
Right atrium, right ventricle, left atrium, left ventricle, lungs
Right atrium, right ventricle, lungs, left atrium, left ventricle
Left atrium, right ventricle, lungs, right atrium, left ventricle

Answer 1

Answer:

Explanation:

Both vena cava passes the deoxygenated blood to the right atrium. Blood from right atrium enters right ventricle and pulmonary arteries carry deoxygenated blood from right ventricle to lungs for oxygenation. Two pulmonary veins come from each lung and pass Oxygen -rich blood to left atrium. Blood enters left ventricle from the left atrium. The left ventricle pumps blood into the aorta which in turn branches and delivers blood to the major body regions and organs. So, the correct sequence is C.

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