The inferior mesenteric arteries are a pair of blood vessels that supply oxygenated blood to the lower part of the large intestine. They branch off from the abdominal aorta and primarily serve the descending colon, sigmoid colon, and rectum. These arteries play a crucial role in the circulatory system by ensuring that the tissues of the lower gastrointestinal tract receive adequate blood flow. Proper functioning of the inferior mesenteric arteries is essential for digestive health and overall well-being.