Which term describes the flow of blood from the heart to body tissues and back?

The term that describes the flow of blood from the heart to body tissues and back is systemic circulation. This process is essential for delivering oxygen and nutrients to cells throughout the body and for returning deoxygenated blood back to the heart. In systemic circulation, oxygen-rich blood is pumped from the left side of the heart through the aorta to various tissues and organs. After delivering its oxygen and picking up carbon dioxide and other waste products, the now oxygen-poor blood returns to the right side of the heart via the veins.

In contrast, pulmonary circulation refers specifically to the flow of blood between the heart and the lungs for oxygenation. Coronary circulation pertains to the supply of blood specifically to the heart muscle itself. Veinous circulation, while it involves the return of blood to the heart, is not a recognized term for describing the overall circulation system and does not encompass the complete journey of blood throughout the body. Therefore, systemic circulation is the correct term to denote the comprehensive flow from the heart to the body and back.