Which of the following statements are TRUE about diaphragm:1. Left side pushed down by hea2. Left side lower than right3. Right side lower than left4. Right side pushed up by liver5. Hernia common on left because of weak origin: (A) 2,4 & 5, (B) 1,3 & 5, (C) 1,2 & 4, (D) 1,4 & 5
Answer is A. "The convex dome of diaphragm on right side is higher because of large size of the right lobe of liver" Level of diaphragm:Site of diaphragmatic herniaRight dome: Upper border of 5th rib (about 2.5 cm higher than left side)Left dome: Lower border of 5th ribCentral tendon: Xiphisternal jointThe pleuroperitoneal canal is (more on the left side; caused by failure of fusion of the septum transversum with the pleuroperitoneal membrane), the opening between the xiphoid and costal origin of the diaphragm. 98% of diaphragmatic hernias are esophageal hiatus hernia. Also know:When seen from the side, diaphragm has the appearance of an inveed J shape.Diaphragm derives its motor supply from phrenic nerve.