Exercises: 14

1. The channel that leads from the pinna to the eardrum is auditory canal.

2. Auditory canal is called as auditory meatus.

3. Auditory nerve fibers carry impulses from the inner ear to the brain.

4. Auditory tube is a channel between the middle ear and the nasopharynx.

5. Auricle is a flap of the ear; protruding part of the external ear.

6. Cerumen is waxy substance secreted by the external ear.

7. Cochlea is a snail-shaped, spirally coiled in the inner ear; contains hearingsensitive

receptor cells.

8. Endolymph is a fluid within the labyrinth of the inner ear.

9. Eustachian tube is the auditory tube.

10. The second ossicle of the middle ear is incus.

11. Labyrinth is a maze-like series of canals of the inner ear.

12. Labyrinth includes the cochlea, vestibule and semicircular canals.

13. The first ossicle of the middle ear is malleus.

14. Organ of Corti is a sensitive auditory receptor area found in the cochlea of the

inner ear.

15. Ossicle is small bone of the ear.

16. Oval window is a membrane between the middle ear and the inner ear.

17. Perilymph is a fluid contained in the labyrinth of the inner ear.

18. Pinna is the auricle.

19. Semicircular canal is a passage in the inner ear associated with maintaining

equilibrium.

20. The third ossicle of the middle ear is stapes.

21. Tympanic membrane is a membrane between the outer and the middle ear.

22. Vestibule is the central cavity of the labyrinth connecting the semicircular canals

and the cochlea.

23. Mastoid process is the posterior of the temporal bone extending downward

behind the external auditory meatus.

24. Surgical reconstruction of the bones of the middle ear with reconnection of the

eardrum to the oval window is called Tympanoplasty

25. Hyperacusis is abnormally acute sensitivity to sounds.

26. Presbycusis is a type of nerve deafness that occurs with the process of aging.

27. Macrotia is an abnormally large ear.

28. Microtia is abnormally small ears.

29. Acoustic neuroma is a benign tumor arising from the acoustic vestibulocochlear

nerve in the brain.

30. Cholesteatoma is a collection of skin cells and cholesterol in a sac within the

middle ear.

31. Loss of ability to hear is deafness.

32. Meniere disease is a disorder of the labyrinth of the inner ear; elevated

endolymph pressure within the cochlea and semicircular canals.

33. Otitis media is an inflammation of the middle ear.

34. Otosclerosis is hardening of the bony tissue of the middle ear.

35. Tinnitus is a sensation of noises in the ears.

36. A sensation of irregular or whirling motion either of oneself or of external objects

is called vertigo.

37. Audiometry is testing the sense of hearing.

38. Cochlear implant is a surgical implant device allowing Sensorineural hearingimpaired

persons to understand speech

39. Ear thermometry is a measurement of the temperature of the tympanic

membrane by detection of infrared radiation from the eardrum.

40. Otoscopy is visual examination of the ear with an otoscope.

41. A test of ear conduction using a vibration source is called tuning fork test.