Area of Study
Sensory Function: Vision, Hearing
and Equilibrium
Learning Objectives
1. Identify the accessory structures
of the eye, and explain their functions.
2. Describe the internal structures
of the eye, and explain their functions.
3. Explain how we are able to distinguish
colors and perceive depth..
4. Explain how light stimulates
production of nerve impulses, and trace the visual pathways to their destinations
in the brain.
5. Describe the structures of the
outer and middle ear, and explain how they function.
6. Describe the parts of the inner
ear and their roles in the processes of equilibrium and balance.
7. Trace the pathways for the sensations
of equilibrium and hearing to their respective destinations in the brain.
Station 1:
Anatomy of the Eye
Using the Model of the Eye, develop mnemonics
to remember the anatomical structures of the eye. Include the following
structures which you should identify on the model:
-
optic nerve
-
fovea
-
retina
-
choroid
-
sclera
-
conjunctiva (palpebra and ocular)
-
ciliary body
-
suspensory ligaments
-
lens
-
cornea
-
anterior cavity
-
posterior cavity
-
iris
-
lacrimal sac
-
medial canthus
 1.
Be prepared to share the mnemonics you develop for this activity.
2. Explain in writing why you have a blind
spot. Submit your output to the instructor at the end of the class.
Station 2:
Astigmatism and Visual Acuity
1. You will perform an eye test for yourself.
2. Record the results from each of the
tests you have taken.
Using
your text and/or the Internet, explain in writing what your test results
mean.
Station 3:
Anatomy of the Ear
Station 4:
Adaptation and Hearing -- Procedure
1. Sit and plug your left ear.
2. Tap a tuning fork on the edge
of the table and hold at the open ear.
3. After 15 seconds of listening
unplug your left ear.
4. Record the observations.
Explain
in writing what happened and why it happened. Submit your output to the
instructor at the end of the class.
Station 5:
Equilibrium and Balance
Use your text and/or the Internet to answer
the following questions in writing:
1. Explain why some people feel
seasick on boats.
2. Describe the movements of the head needed
to activate the anterior ducts, the posterior ducts and the lateral ducts.
3. Why do you feel dizzy after spinning
in a circle?
Submit
your output to the instructor at the end of the class.
|
|
Activity #4
