Commonly injured in blunt abdominal injury is/are -

Answer is 'b' i.e. Prox.Jejunum Small bowel is frequently injured after a penetrating injury After blunt trauma small bowel injury can be seen in 5-20% of patients who required laprotomy. Mechanism of injury of small bowel by blunt trauma Small bowel is injured by 3 postulated mechanisms 1) crushing of the bowel between the veebral bodies and the blunt object, such as steering wheel or handle bar. 2) deceleration shearing of the small bowel at points where it is fixed such as ligament of Treitz (duodenojejunal jn), the ileocecal junction and around the mesentric aery. 3) closed loop rupture caused by sudden increase in intra-abdominal pressure.