The Inferior Mesenteric Artery (IMA) is a major blood vessel that supplies oxygenated blood to the lower part of the digestive system. It branches off from the abdominal aorta and primarily serves the descending colon, sigmoid colon, and rectum. The IMA is important for maintaining the health of these organs by providing essential nutrients and oxygen. It typically divides into three main branches: the left colic artery, sigmoid arteries, and the superior rectal artery, ensuring adequate blood flow to the areas it supplies.