Question

multiple choice question
which of the following describes the path of a blood cell from the superior vena cava as it makes its way through the heart?
right atrium -> right ventricle -> pulmonary artery -> lung -> pulmonary vein -> left atrium -> left ventricle -> aorta
left atrium -> left ventricle -> aorta -> pulmonary artery -> lung -> pulmonary vein -> right atrium -> right ventricle
right atrium -> right ventricle -> pulmonary vein -> lung -> pulmonary artery -> aorta -> left atrium -> left ventricle
left atrium -> left ventricle -> aorta -> pulmonary vein -> lung -> pulmonary artery -> right atrium -> right ventricle

Explanation:

Blood from the superior vena cava enters the right atrium. Then it goes to the right ventricle. From the right ventricle, it is pumped to the lungs via the pulmonary artery. After oxygenation in the lungs, it returns to the heart via the pulmonary vein to the left atrium. Then it moves to the left ventricle and is pumped out to the body via the aorta.

Answer:

Right atrium → right ventricle → pulmonary artery → lung → pulmonary vein → left atrium → left ventricle → aorta