Special Senses Quiz

The following are questions from the special senses material in the above pages and from lecture:

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What type of autonomic input to the pupil increases in low light levels?

An opthalmologist dilates the pupil and looks in the eye. What visible structure is of special interest for glaucoma?

The lens in the relaxed eye is normally about +20 diopters. Does parasympathetic stimulation of the ciliary muscle increase or decrease this number?

Hyperopia is one focusing problem requiring a convex lens. Can you name another?

In otosclerois, what structure usually does the sclerosis tend to immobilize?

What is the name of the symptom usually reported as "ringing" in the ears?

In macular degeneration, what type of particles (lipid and protein) accumulate in the dry form?

What membrane lies between the middle ear and the cochlea?

What growth factor stimulates blood vessel growth in the wet form of macular degeneration? (give initials)

(Spelling must be correct)

Name a glaucoma treatment that reduces the formation of aqueous humor.


Name a drug that might be used to constrict the pupil in closed angle glaucoma.


An opthalmologist looks in the eye and sees lipid droplets, edema from fragile blood vessels, and some "cotton wool" spots. What is the common cause of this appearance?


What class of proteins are olfactory receptors?


Sometimes a drug with sedative actions is given to a patient with symptoms such as tinnitis (ringing in the ears) or vertigo. One class of such drugs are the benzodiazepines, which act on an Cl- ion channel that is opened by the inhibitory neurotransmitter GABA. What do you suppose the action of benzodiazepines is on this channel?


Absorption of light in a rod causes a decrease in cyclic GMP. What kind of ion channel is affected, does it open or close, and does this cause depolarization or hyperpolarization?


What lobe of the brain has the primary auditory cortex?