What term correctly describes the process of carrying blood to the tissues?

The term that accurately describes the process of carrying blood to the tissues is perfusion. Perfusion specifically refers to the flow of blood through the capillaries and into the tissue spaces, where oxygen and nutrients are delivered, and waste products are removed. This process is crucial because it ensures that all tissues receive an adequate supply of blood, which is necessary for their function and survival.

While circulation is a broader term that encompasses the entire movement of blood throughout the body, including the heart and all blood vessels, perfusion zeroes in on the micro-level exchange and delivery of blood at the tissue level.

Diffusion and osmosis are distinct physiological processes that relate to the movement of molecules across membranes. Diffusion involves the movement of particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water through a semipermeable membrane. Neither pertains to the transportation of blood itself, making them irrelevant in this context.