Why do objects viewed underwater with a mask appear closer and larger than they really are?
A) Water is denser than the lens of the eye.
B) Light moves more slowly through the water.
C) The mask provides additional refraction of light before it reaches the retina.
D) The cornea does not function in water, and the light is not refracted as much.
E) Light traveling through the water scatters more than it does when moving through the air.
130) Damage to the fovea of the eye would interfere with the ability to
A) focus an image.
B) regulate the amount of light striking the retina.
C) detect objects in the periphery of ones field of vision.
D) detect the detailed image of objects in the middle of ones field of vision.
E) detect color images.
131) When a rod located in the retina is stimulated by light,
A) the cell depolarizes.
B) the inactive form of retinal associates with bleached opsin.
C) the activity of transducin decreases.
D) the release of neurotransmitter increases.
E) the intracellular concentration of cGMP decreases.
132) Put these structures of the visual system in the order that they transmit light to the retina.
2. aqueous humor
4. vitreous humor
A) 3, 4, 1, 2
B) 3, 2, 1, 4
C) 1, 2, 3, 4
D) 1, 4, 3, 2
E) 2, 3, 4, 1
133) Put these structures of the visual system in the order that they transmit visual information from the retina.
A) 3, 1, 2, 4
B) 3, 1, 4, 2
C) 1, 3, 4, 2
D) 1, 3, 2, 4
E) 1, 2, 3, 4
134) With the photoreceptor already stimulated with a moderate light intensity, a(n) ________ in light intensity is required to open more sodium channels.
135) Greater visual acuity results from convergence of ________ numbers of photoreceptors onto retinal ganglion cells.
136) Which two sensory systems contain structures called maculae?
A) gustatory and olfactory
B) olfactory and auditory
C) auditory and vestibular
D) vestibular and visual
E) visual and somatosensory
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