Systemic circulation carries oxygen rich blood from the heart to the ____.

The systemic circulation is the part of the cardiovascular system responsible for carrying oxygen-rich blood away from the heart to the rest of the body, and then returning deoxygenated blood back to the heart. This process begins in the left ventricle, where oxygenated blood is pumped into the aorta. From the aorta, the blood travels through a network of arteries and arterioles to supply oxygen and nutrients to all cells and tissues in the body.

While blood does flow to the brain and kidneys as specific organs that require oxygen, the question specifically asks about systemic circulation as a whole, which encompasses the entire body. Thus, the correct answer highlights the broad scope of systemic circulation's role in oxygen delivery throughout the body. This distinction is crucial in understanding cardiovascular physiology and the supply of oxygen to various tissues.