Degree of normal intestinal loop rotation is:: (A) 180deg counterclockwise, (B) 180deg clockwise, (C) 270deg counterclockwise, (D) 270deg clockwise
Answer is C. Abnormal rotation of the intestinal loop may result in twisting of the intestine (volvulus) and a compromise of the blood supply. Normally, the primary intestinal loop rotates 270deg counterclockwise. Ref: Langman's embryology 11th edition Chapter 14.