41. Sinus infections can also cause middle ear problems due to the congestion of the nasal passages. 42. No single method is considered safest or most successful in equalization of the middle ear pressure. 43. Otitis media _ inflammation of the middle ear _ inspires 26 million doctor visits each year. 44. Howler monkeys also have an inflated bulla, which is the bony encasement of the middle ear . 45. This is a way to somewhat bypass the outer and middle ears to stimulate the cochlea. 46. This model suggests that diffusion of gases from the middle ear across the round window is negligible. 47. It has been suggested that these mammals are either the possible ancestors of three middle ear bones. 48. He discovered that the voices of opera singers had damaged their own muscles of the middle ears . 49. Both can place pressure on the middle ear , which may help set the stage for ear infections. 50. A wire leads down to a small electromagnet implanted in the middle ear that drives the vibrations.
