31. The retractor acts like a fisherman who plays out his line to keep a hooked fish from breaking it. 32. In conventional mitral valve surgery, surgeons cut through the breastbone and open up the chest with a retractor . 33. During testing, NHTSA noted the driver's seat belt webbing partially tore near the lower belt retractor . 34. After the rotation is complete, a " retractor " pushes the protruding bars back into place. 35. My personal favorite story is when I was in a junk yard looking for a seat belt retractor mechanism. 36. After a median sternotomy, a surgical retractor is placed by the surgeon to optimize exposure of the heart. 37. Reproductive system : Genital retractor inserts more anteriorly in the median line of dorsum than in the other species. 38. The m . genioglossus is used to protract the tongue and the m . hyoglossus is the tongue retractor . 39. Faubert and Caspart, which effectively paved the way for further development of tubular retractors and other smaller instruments. 40. A hinged metal retractor spreads open the ribs far enough to create a stable " access platform ."