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Exercise Quizzes
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1What is the function of the lens?


2What is the function of the retina?


3The ________ is the area of retina with greatest sharpness of image, and the ________ is the region on the retina where the optic nerve and blood vessels enter or leave the retina.


4Your blind spot lacks photoreceptors. Why don’t you have a loss of vision from your blind spot?


5Our eyes exhibit right–left dominance.
A)True
B)False


6The closest distance at which an object is in sharp focus is ________.
A)near point
B)near sighted
C)focus point
D)close focus


7Near point will increase as you get older.
A)True
B)False


8Define binocular vision.


9Define afterimage.


10A person with 20/40 vision has better visual acuity than one with 20/20 vision.
A)True
B)False


11Define astigmatism.


12There are more cones in the periphery of the visual field than the central fovea.
A)True
B)False


13What are two major kinds of hearing loss?


14What instrument will you use to test hearing loss?


15Food must be dissolved in saliva for it to be tasted.
A)True
B)False


16Papillae are sensory projections (bumps on your tongue) with ________ arranged down their sides that open into the mouth through a pore.


17An integration of impulses from taste receptors combined with other senses such as vision, touch, and smell all combine to produce flavor.
A)True
B)False


18If you wear perfume or cologne, you stop smelling it after a while. This is an example of ________.





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