Question

Name: Anatomy of the Auditory Systenm Fill in the left column ("Hearing Structure") with the corresponding letter from the diagram. Fill in the right column ("Role Played in Processing Auditory Information") by matching the part of the ear with its job (choose from M-R in the box below). Role Played in Processing Auditory Information M. The bones of the middle ear that help to transmit sound wave energy to the inner ear N. Receptors in the cochlea converge and form this structure that carries auditory information to the brairn O. A membrane that transmits sound wave information to the inner car P. The first membrane to get struck by sound wave energy Q. A structure that holds all of the receptors for hearing. R. A part of the outer car that conducts sound wave encrgy to the middle car Role Plaved in Processing Auditory Information 9 auditory nerve1 cochlea 10. external auditory canal ossicles (middle ear bones) 12 Anvil 4. oval window 7.(not clearly noted on diagram) 13. tympanic membrane eardrum 8. 14. List the parts of the ear in the order in which sound wave energy moves through them: cochlea, eardrum, external auditory canal, middle ear bones, oval window THEN 16. THEN 17 THEN 19 Using the figure as a reference, match the following 20. This sound wave has the highest frequency: 21. This sound wave has the lowest frequency: 22. This sound wave represents the highest pitch: 23. This sound wave represents the quietest sound: 24. This sound wave has the lowest amplitude: 25, Where are the pinnae and what do they do?

Answer 1

1. F
2. G
3. L
4. B
5. A
6. C
7. I
8. J
9. P
10. Q
11. R
12. M - A, B and C i.e. malleus, incus and stapes
13. I - vestibulli of the oval window
14. O
15. External auditory canal
16. Eardrum
17. Middles ear bones - ossicles
18. Oval window
19. Cochlea
20. 4 since it has the shortest wavelenth
21. 3 since it has the maximum wavelenth
22. 2 since highest amplitude with high frequency
23. 1 since it has both the low frequency and amplitude low
24. 1
25. Pinna is the external visible part of the ear which is also known as the ear lobe. The pinna directs the waves of sound inside the ear to be transmited to the brain.