Arterial supply refers to the network of arteries that deliver oxygen-rich blood from the heart to various tissues and organs in the body. This system is crucial for maintaining the health and function of cells, as it provides the necessary nutrients and oxygen while removing waste products. The main artery in the body is the aorta, which branches into smaller arteries that reach different regions. Each organ, such as the brain, lungs, and kidneys, has its own specific arteries that ensure adequate blood flow, supporting their vital functions and overall homeostasis.