Massive colonic bleeding in a patient of Di veiculosis is from -

Ans. is 'b' i.e., Superior Mesentric Aery Although diveiculosis involves mainly the left side of colon, bleeding occurs mostly from right side of colon. Right side is supplied by superior mesentric aery. "Hemorrhage from a colonic diveicula is the most common cause of hematochezia in patients over the age of 60." - Harrison 16/e, p 1796