Step-by-step explanation:
The left ventricle of the heart is responsible for pumping oxygen-rich blood to the rest of the body, including the arms and legs. After receiving oxygenated blood from the left atrium, the left ventricle contracts forcefully to propel the blood into the aorta, the largest artery in the body. From the aorta, oxygen-rich blood is distributed to various organs, tissues, and muscles throughout the body, including the arms and legs, providing them with the necessary oxygen and nutrients for their functioning.