Contraction of the left ventricle causes:

Contraction of the left ventricle causes:

• A. Blood to flow into the pulmonary circulation
• B. Blood to flow into the systemic circulation
• C. Blood to flow from the right atrium to the right ventricle
• D. Blood to be filtered by the kidneys

Answer: (B)

Left ventricular contraction pushes oxygen-rich blood into the systemic circulation via the aorta, delivering it to all body tissues. The left ventricle must generate high pressure to overcome systemic vascular resistance and ensure blood reaches distant organs. In contrast, the right ventricle sends blood to the lungs (pulmonary circulation), the flow from the right atrium to the right ventricle involves the right heart’s valves, and kidney filtration is a function of renal perfusion rather than a direct immediate result of left-ventricular contraction.

Left ventricular contraction pushes oxygen-rich blood into the systemic circulation via the aorta, delivering it to all body tissues. The left ventricle must generate high pressure to overcome systemic vascular resistance and ensure blood reaches distant organs. In contrast, the right ventricle sends blood to the lungs (pulmonary circulation), the flow from the right atrium to the right ventricle involves the right heart’s valves, and kidney filtration is a function of renal perfusion rather than a direct immediate result of left-ventricular contraction.