NSC216

The fibrous layer consists of the sclera and cornea; the vascular layer consists of the_____,
ciliary body, and iris.

2. Sounds louder than _____________ db are painful to the ear

The auditory tube opens into the _____________ and enables air pressure to be equalised
between the outside air and the middle ear cavity.

Within the olfactory bulb and olfactory cortex, ______ occur that tend to inhibit transmission
of action potentials resulting from prolonged exposure to a given odorant.

5. The ______ is an air-filled chamber medial to the tympanic membrane.

6. Distortion of the ______ membrane can make sounds seem muffled and stimulate pain

7. The average person can distinguish among approximately _____ different smells

8. The brain interprets the higher _____ of action potentials as a louder sound.

9. Static balance is associated with the utricle and the saccule of the______.

10. The _____ interprets the higher frequency of action potentials as a louder sound.

11. A condition in which there is enhanced smell sensitivity is called_____

The ______ helps maintain the shape of the eyeball, protects its internal structures, and
provides an attachment point for the extrinsic eye muscles.

13. The ______________ of sound is a function of the wave frequency.

14. The ______________ is a thin membrane separating the external ear from the middle ear.

15. Substances called ______ dissolve in saliv

16. _____ is mainly a function of the taste buds in the mouth

Airborne odorants become dissolved in the mucus on the surface of the epithelium and bind
to molecules on the membranes of the olfactory hairs called______

18. The external ear is the part extending from the outside of the head to the_____

19. The cells of the taste buds each have a normal life span of about ______days.

_____ attach the ciliary ring and processes to the lens of the eye, and contraction of the
ciliary muscles can change the shape of the lens.

The oval window is approximately ____________ times smaller than the tympanic
membrane.

22. The sensory cells of each taste bud consist of about 50______.

23. ______ is the most common disease involving dizziness from the inner ear.

24. The sclera is continuous with the_____, the anterior sixth of the eyeball.

The importance of taste lies in the fact that it allows a person to select _____ in accord with
desires

26. ______ enters the eye through the pupil

The cochlear nerve joins the vestibular nerve to become the_____, which traverses the
internal acoustic meatus and enters the cranial cavity.

28. The remaining two nonsensory cell types are basal cells and_____

29. Food served at the wrong ______ is perceived as distasteful.

30. Static balance is associated with the ______ and the saccule of the vestibule.

The ______________ muscle is attached to the malleus and is innervated by the trigeminal
nerve
(V).

Stimulation of the inner hair cells by the nervous system stimulates the contraction of
______________ within the hair cells causing them to shorten.

33. The term _____ refers to the cochlea of the inner ear, which is involved in hearing

34. The ciliary ring and the base of the ciliary processes contain smooth muscle called_____.

Olfactory neurons are ______ neurons with dendrites extending to the epithelial surface of
the nasal cavity.

36. Sensitivity for bitter substances is the highest.

37. MSG stands for_______

38. ______is a partial loss of smell or decreased sensation of smell

39. How many primary tastes have been identified in humans?

The ______ ear is the part extending from the outside of the head to the tympanic membrane,
or eardrum.

41. _____ is a complete loss of smell

Substances called tastants dissolve in saliva, enter the taste pores, and by various mechanisms
cause the taste cells to______.

Each of the ______ taste buds on a person’s tongue consists of three major types of
specialised epithelial cells

44. The head to the eardrum is also called _______

45. The sensory cells of each taste bud consist of about _____ taste cells.

46. _________ smell perception with no external stimulus

47. The ______ interprets the higher frequency of action potentials as a louder sound.

48. The middle ear contains ______________auditory ossicles

49. ___million olfactory neurons are present within the olfactory epithelium.

50. The distortion of the tympanic membrane can make sounds seem muffled and stimulate pain.