What is the primary function of the left ventricle?

The primary function of the left ventricle is to send oxygen-rich blood to the body. This chamber of the heart plays a critical role in the circulatory system. After oxygenation occurs in the lungs, the left atrium receives the oxygen-rich blood and then passes it to the left ventricle. The left ventricle contracts and generates the force necessary to propel this oxygenated blood into the aorta, the main artery supplying oxygen to all parts of the body.

In contrast, the other options describe functions that are associated with different chambers of the heart or processes. For example, sending oxygen-poor blood to the lungs is the responsibility of the right ventricle, which pumps deoxygenated blood to the pulmonary arteries. Receiving oxygen-rich blood from the lungs pertains to the left atrium, not the left ventricle. Lastly, the task of pumping blood into the right atrium involves the superior and inferior vena cavae, which return deoxygenated blood from the body to the heart, specifically into the right atrium. Thus, the left ventricle’s primary role is crucial for systemic circulation by delivering oxygenated blood where it is needed throughout the body.