The term "blood supply" refers to the network of blood vessels that deliver oxygen and nutrients to tissues throughout the body. This system includes arteries, veins, and capillaries, which work together to ensure that every cell receives the necessary substances for proper function. The heart pumps blood through these vessels, maintaining circulation and supporting overall health. In addition to providing essential nutrients, the blood supply also plays a crucial role in removing waste products from tissues. This process helps maintain homeostasis, which is the body's ability to regulate its internal environment. Proper blood supply is vital for the functioning of organs such as the heart, lungs, and brain.