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

2. Substances called ______ dissolve in saliv

The fibrous layer consists of the sclera and cornea; the _____consists of the choroid, ciliary
body, and iris.

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

5. The _____________collects sound waves and directs them into the external acoustic meatus.

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

7. Static balance is associated with the utricle and the _____ of the vestibule.

When the taste cells depolarize, they release _____ that diffuse to sensory neurons associated
with the taste cells.

_______________ of the inner hair cells by the nervous system stimulates the contraction of
actin filaments within the hair cells causing them to shorten.

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

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

12. The brain interprets the higher frequency of action potentials as a _____sound.

13. ______ enters the eye through the pupil

14. The term ______ refers to the vestibule of the inner ear, which is involved in balance.

15. The head to the eardrum is also called _______

The ______ consists of interconnecting, fluid-filled tunnels and chambers within the temporal
bone called the bony labyrinth.

17. The middle ear contains three auditory ossicles: the malleus, incus, and_____________.

18. The middle ear contains ______________auditory ossicles

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

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

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

22. Light enters the eye through the _______

23. The ______ of the eye is so named because it contains most of the blood vessels of the eye

Most of the sensations thought of as being tastes are strongly influenced by ______
sensations.

25. The external and middle ears are involved in ______only

26. The organs of hearing and balance are divided into ______ parts.

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

The wide varieties of detectable odours are actually combinations of a smaller number of
______odours.

29. The ______cells of each taste bud consist of about 50 taste cells.

Each of the 10,000 taste buds on a person’s tongue consists of three major types of
specialised ______cells

31. Receptors on the hairs detect ______

32. ______ can produce strong emotional reactions, memories, and other responses

33. The basilar membrane is not uniform throughout its length.

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______

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

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

The _____opens into the pharynx and enables air pressure to be equalised between the
outside air and the middle ear cavity.

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

Olfactory neurons are bipolar neurons with _____ extending to the epithelial surface of the
nasal cavity.

______ is associated with the vestibule and is involved in evaluating the position of the head
relative to gravity.

41. The _____________ is attached to the medial surface of the tympanic membrane.

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

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

Axons from olfactory neurons form the olfactory nerves which pass through the olfactory
foramina of the cribriform plate and enter the______

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

46. The higher the frequency is, the higher the pitch.

47. The iris contains ______ groups of smooth muscles

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

The ______ is continuous anteriorly with the ciliary body, which consists of an outer ciliary
ring and an inner group of ciliary processes.

50. _____ is the least understood of our senses.