31. Barostat-balloon systems have been used anywhere in the gut, including the esophagus, stomach, small bowel, rectum ampulla . 32. The tube feet of " S . droebachiensis " are actually composed of two parts : the ampulla and the podium. 33. The tube feet are individually composed of a thin muscular stalk ( podia ) tipped with a small suction cup ( ampulla ). 34. This void, termed an ampulla , would hinder the ability of the " crack " formed by the serration to propagate through the tooth. 35. It involves a reorientation of the head to align the posterior semicircular canal ( at its entrance to the ampulla ) with the direction of gravity. 36. Its caliber is similar to that of the sigmoid colon at its commencement, but it is dilated near its termination, forming the rectal ampulla . 37. An order of knights named after the ampoule, the Knights ( later Barons ) of the Holy Ampulla was created for the coronation of kings. 38. William Abler observed in 2001 that " Albertosaurus " tooth serrations resemble a crack in the tooth ending in a round void called an ampulla . 39. Adults differ from the sister species " Lygephila pallida " in the length and shape of the ampulla , and in vesica and aedeagus structure. 40. In response to a signal from the ovary, the capacitated sperm travels farther up the tube to a location called the ampulla , where the egg is.