Which Blood Vessel Supplies the Descending Colon and Sigmoid Colon

Mr. Santos, a 45-year-old Male, Presents to the Emergency Department with Severe Abdominal Pain and Rectal Bleeding. He Reports a History of Constipation and Occasional Diarrhea. on Physical Examination and Tenderness Is Noted in the Left Lower Quadrant of the Abdomen. the Healthcare Provider Suspects a Disorder Involving the Large Intestine