The Visual System: Quiz Game

1
The Visual System
Neuro Quiz
Identify the correct question
Click to Play!
? Michael McKeough 2008
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Visual SystemNeuro Quiz
Receptors Central Pathway Physiology Misc. Pathology
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
Click category value to begin.
3
Receptors 100

• This is the most anterior structure of the globe
  (eye ball).
• It provides protection to the anterior chamber.
• It becomes drier and less flexible with age.

What is the cornea?
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4
Receptors 200

• This aperture reflexively regulates the level of
  illumination in the posterior chamber.
• Under normal circumstances it is reactive to
  light.

What is the pupil?
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5
Receptors 300

• These receptors are sensitive to black and white.
• They are also sensitive to lines, edges and
  motion.
• They are the most numerous receptors in the
  retina, particularly toward the periphery.

What are rods?
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6
Receptors 400

• This structure produces the blind spot in the
  visual field.
• It covers the ganglion cells as they exit the
  globe.

What is the optic disk?
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7
Receptors 500

• This is the preferred region of the retina.
• It contains a 11 relationship between cones and
  bipolar cells.

What is the fovea centralis?
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8
Central Pathway 100

• These cells form the first-order neurons in the
  central visual pathway.
• They innervate both rods and cones.

What are bipolar cells?
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9
Central Pathway 200

• This pathway projects from the optic chiasm to
  the thalamus.
• It consists of fibers from the ipsilateral
  temporal hemiretina and contralateral nasal
  hemiretina.

What is the optic tract?
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10
Central Pathway 300

• This nucleus is the thalamic relay center for the
  central visual pathway.
• It contains the cell bodies of third-order
  neurons.

What is the lateral geniculate nucleus?
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11
Central Pathway 400

• These fibers consist of third-order neurons
  projecting from the thalamus to the primary
  visual cortex.
• They arch around the lateral ventricle to reach
  their destination.

What are the optic radiation fibers?
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12
Central Pathway 500

• This sulcus contains the primary visual cortex
  within the occipital lobe.
• It is visible on a midsaggital section of the
  brain.
• Area 17 of Brodmann is located on both its
  superior and inferior banks.

What is the calcarine sulcus?
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13
Physiology 100

• This structure is located in the anterior chamber
  and gives the eye its color.

What is the iris?
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14
Physiology 200

• These are the three color sensitivities on which
  color vision is based.

What are red, blue, and green?
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15
Physiology 300

• The receptor potential in rods is due to the
  bleaching of this substance.

What is rhodopsin?
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16
Physiology 400

• This structure, in the human retina, absorbs
  light after it passes by the receptors.

What is the choroid?
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17
Physiology 500

• The eyes deviate in this direction when the
  speaker is visually remembering images.

What is up and to the left?
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18
Miscellaneous 100

• These extraocular muscles are named for the
  direction in which they move the eye.
• There are 4 pairs of these muscles in each eye.

What are the rectus muscles?
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19
Miscellaneous200

• This type of eye movement is used to reposition
  the globe from one visual target to another.
• These movements occur so quickly as to be
  imperceptible.

What is saccadic movement?
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20
Miscellaneous300

• This clear fluid fills the posterior chamber.

What is vitreous humor?
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21
Miscellaneous400

• This portion of the retina receives images from
  the lateral portion of the visual field.
• Fibers originating here cross the midline in the
  optic chiasm.

What is the nasal hemiretina?
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22
Miscellaneous500

• This portion of ambient light is what gives an
  object its color.

What is the frequency of light waves reflected by
the visual target?
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23
Pathology 100

• A lesion of this structure produces monocular
  blindness.

What is the optic nerve?
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24
Pathology 200

• This clinical test is commonly used to examine
  the oculomotor system (extraocular muscles).

What are the cardinal planes of gaze?
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25
Pathology 300

• This type of abnormal, involuntary eye movement
  consists of slow and fast components.
• It is associated with damage to the vestibular
  and cerebellar systems.

What is nystagmus?
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26
Pathology 400

• Age-related deficits in visual acuity
  (presbyopia) are caused by this impairment.
• It is caused by a progressive loss of fluid.
• It usually results in farsightedness (hyperopia).

What is impaired lens accommodation?
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27
Pathology 500

• This is the most common visual impairment (field
  cut) associated with stroke.
• It is caused by a lesion affecting the central
  visual pathway posterior to the optic chiasm.

What is hemianopsia?
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