Eighty-year-old Mr. Johnson was becoming slightly deaf. To test his hearing, his doctor
Chapter 29, Problem 2(choose chapter or problem)
Eighty-year-old Mr. Johnson was becoming slightly deaf. To test his hearing, his doctor held a vibrating tuning fork tightly against the back of Mr. Johnsons skull. This sent vibrations through the bones of the skull, setting the fluid in the cochlea in motion. Mr. Johnson could hear the tuning fork this way, but not when it was held away from the skull a few inches from his ear. The problem was probably in the ____________ . (Explain.) a. auditory center in Mr. Johnsons brain. b. auditory nerve leading to the brain. c. hair cells in the cochlea. d. bones of the middle ear. e. fluid of the cochlea.
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