What does the left ventricle do?

The left ventricle plays a crucial role in the circulatory system by supplying oxygenated blood to the entire body. After the blood is oxygenated in the lungs, it returns to the left atrium of the heart, then moves into the left ventricle. The left ventricle contracts and pumps this oxygen-rich blood out through the aorta, which distributes it to all the body's tissues and organs. This process is essential for delivering the necessary oxygen and nutrients to cells and removing carbon dioxide and other waste products.

Understanding the specific function of the left ventricle helps clarify its importance in maintaining efficient circulation and overall health. The other options highlight functions of different parts of the circulatory system, such as the right side of the heart receiving deoxygenated blood, the lungs being the site of gas exchange, and the kidneys' role in filtering blood, which underscores the specialization of each component of the cardiovascular system.