Rectal arteries are blood vessels that supply oxygenated blood to the rectum, which is the final section of the large intestine. There are three main rectal arteries: the superior rectal artery, the middle rectal artery, and the inferior rectal artery. These arteries branch off from larger vessels, such as the inferior mesenteric artery and the internal pudendal artery, ensuring proper blood flow to the rectal area. The superior rectal artery primarily supplies the upper part of the rectum, while the middle rectal artery serves the middle section. The inferior rectal artery, a branch of the internal pudendal artery, supplies the lower part. Together, these arteries play a crucial role in maintaining the health and function of the rectum.