Question

after entering the right atrium, the furthest a red blood cell can travel is the
multiple choice
right ventricle
pulmonary trunk
superior vena cava
ascending aorta
left atrium

Explanation:

Red blood cells enter the right atrium, then pass to the right ventricle, then to the pulmonary trunk for pulmonary - circulation. After oxygenation in the lungs, they return to the left atrium. The ascending aorta is part of the systemic circulation and is further along the pathway compared to the other options given before the start of systemic circulation. The superior vena cava is the vessel that brings de - oxygenated blood to the right atrium, not a destination after entering the right atrium. Among the options, the ascending aorta is the furthest point in the given choices as it is part of the systemic circulation which comes after pulmonary circulation.

Answer:

ascending aorta