Systemic circulation begins in the left ventricle or aorta and ends in the vena cava or right atrium.

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This is correct. The systemic circulation is the portion of the circulatory system that carries oxygenated blood away from the heart, delivers it to the organs and tissues of the body, and then returns deoxygenated blood back to the heart. It begins in the left ventricle or aorta, which pumps blood out to the body, and ends in the vena cava or right atrium, which receives blood returning from the body.

Systemic Circulation Begins in the Left Ventricle or Aorta and Ends