CH16-Special Senses III STUDY GUIDE .docx - CH15 Special...

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CH15: Special Senses III: The Ear—Hearing & Balance STUDY GUIDE Slide # What to Know: 1. What is the inner ear responsible for sensing? 2. What two major structures compose the external ear? What is the function of the tympanic membrane (ear drum)? 3. Describe the middle ear. What connects it to the nasopharynx? Describe the ossicles. What are the three individual ossicle bones? Where do they transmit their signal? 4. What three main structures are found in the membranous labyrinth? 5. Functions of: cochlea, spiral organ of Corti. On what membrane do the hair (receptor) cells sit? What membrane rests on top of them? 6. Know that sound originates from a vibrating object and travels in waves 7. Know the four steps involved in hearing (see slide #35 for labeling practice) 8. Where are low and high frequency sounds heard? 9. Know that depolarization occurs when the hairs are bent toward the tallest stereocillium 10. Which area/cortex of the brain processes sound? 11. Where are the balance/equilibrium receptors housed? 12. Describe: static equilibrium. Where are the receptors for static equilibrium?
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