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1. ____ is distortion of perception of an external stimulus

2. The eyeball is composed of _____layers.

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

4. A small superior part of the nasal cavity is lined with______.

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

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

7. ______ is a complex process not simply confined to one type of input.

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

9. MSG stands for_______

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

11. When an odorant binds to its receptor, a______associated with the receptor is activated.

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

13. ______ simply means that an animal will choose certain types of food in preference to others

The _____ joins the vestibular nerve to become the vestibulocochlear nerve (VIII), which
traverses the internal acoustic meatus and enters the cranial cavity.

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

16. The _____ regulates the amount of light by controlling the size of the pupil.

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

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

19. Deflection of the hairs toward the ______ results in depolarization of the hair cell.

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

21. The ______ is a set of fluid-filled chambers medial to the middle ear.

The “hairs” of the hair cells consist of numerous microvilli, called_____, and one cilium,
called a kinocilium.

23. The sense of balance, or equilibrium, has two components: _____ and____

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______

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

26. The process of choosing certain types of food in preference to others is called_______

27. Substances called ______ dissolve in saliv

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

29. Rupture of the _____may result in hearing impairment.

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

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

32. Deflection of the hairs toward the kinocilium results in ______of the hair cell

The _____ stimulate action potentials in the sensory neurons which are conducted to the brain
where the sense of taste is perceived.

The fibrous layer consists of the sclera and cornea; the vascular layer consists of the choroid,
______body, and iris.

_____ is associated with the semicircular canals and is involved in evaluating changes in the
direction and rate of head movements.

36. The auricle collects sound waves and directs them into the external_____________.

37. The inner ear contains the sensory organs for hearing and______.

38. The external and middle ears are involved in ______only

39. The middle ear contains ______________auditory ossicles

40. The odorants must first be dissolved in fluid in order to reach the olfactory receptors.

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

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

43. The ____________and stapedius muscles are attached to auditory ossicles.

44. Axons from olfactory neurons form the _______

45. The brain interprets the higher frequency of action potentials as a ______________sound

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

47. ______ enters the eye through the pupil

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

49. The head to the eardrum is also called _______

50. The iris contains ______ groups of smooth muscles