Which of the following statements is true regarding left ventricular function?

The statement about left ventricular function that is true is that it ejects blood into systemic circulation. This is a fundamental aspect of the left ventricle's role in the cardiovascular system. The left ventricle is responsible for pumping oxygenated blood received from the left atrium into the aorta, which then distributes it throughout the body. This process is essential for delivering oxygen and nutrients to various tissues and organs, making it a critical component of systemic circulation.

In contrast, if we look at the other options, the left ventricle does not serve pulmonary circulation; that function is served by the right ventricle, which pumps deoxygenated blood to the lungs for gas exchange. The left ventricle does not receive blood from systemic veins; the right atrium receives deoxygenated blood from systemic circulation before passing it to the right ventricle. Finally, the left ventricle does not receive blood from pulmonary arteries; those arteries carry deoxygenated blood from the right ventricle to the lungs. Hence, recognizing the left ventricle's role in ejecting blood into systemic circulation is crucial for understanding the heart's functionality.