Special Senses Lab Name: ______

Anatomy of the Eye and Eyesight

Identifying Accessory Eye Structures / Right eye / Left eye
Activity Demonstrating the Blind Spot / Right eye / Left eye
Determining Near Point of Accommodation / Right eye / Left eye
Testing Visual Acuity / Right eye / Left eye
Testing for Astigmatism / Right eye / Left eye
Testing for Colorblindness / Yes or No / If so, what type?
Accommodation Pupillary Reflexes / Explain the value of the reflex:
Convergence Reflex / Explain the importance of the convergence reflex: / in what way?

Ear, Hearing and Balance

Acuity Test
In the threshold of audibility sharp or indefinite? / Right ear / Left ear
Sound Localization / Yes or No / If not, at what position(s) was the sound less easily located?
Weber Test
Rhine Test
Does the subject hear better by bone or by air conduction? / Right ear / Left ear
Balance Test
Was nystagmus present? / Is subject able to walk without noticeable wobbling from side to side? / Does the subject experience any dizziness?
Romberg Test / Did you see any gross swaying movements? / Degree of side to side movement
Degree of front to back swaying

Do you think the equilibrium apparatus of the inner ear was operating equally well in all these tests? ______

The proprioceptors? ______

Why was the observed degree of swaying greater when the eyes are closed?

Objective 9: Role of Vision in Maintaining Equilibrium

Record observation: ______

Record observations with eyes closed: ______

Chemical Senses: Smell and Taste

Identification of the Papillae on the Tongue / ______, If so, which
Stimulating Taste Buds / ___ seconds
Why couldn’t you taste the sugar immediately?
Plotting Taste Bud Disturbance. / What area of the tongue dorsum seems to lack receptors?

Objective 11: Activity: Draw a diagram of the tongue.

Objective 12: Activity: Effects of smell and texture

Chart 1: Method of Identification

Food / Texture only / Chew with nostrils pinched / Chew with nostrils open / Identification not made
Cheese
Apple
Banana
Dried prunes
Hard cooked egg white

Was the sense of smell equally important in all cases? ______

Where did it seem to be important and why? ______

______

Objective 12: Effect of Olfactory Stimulation

Can the subject distinguish the flavor? ______Identify oil: ______

Record change in sensation with open nostrils: ______

Record sensations: ______

Which sense, taste or smell, appears to be more important in the proper identification of a strongly flavored volatile substance? ______

Objective 12: Effect of Temperature: Results:

______