3. How are sound waves able to act as nerve stimuli?
4. Describe two methods of reënforcing sound waves. Which method is employed in the body?
[pg 367]5. Name all the parts of the body that are directly or indirectly concerned in the production of sound.
6. Describe the larynx.
7. Describe the condition of the vocal cords in speaking and in ordinary breathing.
8. How are sounds differing in pitch and intensity produced by the larynx?
9. How is the sound produced by the vocal cords changed into speech?
10. What parts of the ear are concerned in transmitting sound waves?
11. Give the purposes of the middle ear.
12. Trace a sound wave from a bell to the basilar membrane, and trace the impulse that it causes from there to the brain.