1. Blood!! Identify the correct question Click to Play!  D. Johnson 2011
The Visual System
Neuro Quiz
Identify the correct question
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 Michael McKeough 2008
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 D. Johnson 2011

2. Body Landmarks and Positions
Cells
Function
Blood Typing
Pathology
Misc.
100
200
300
400
500
Visual System
Neuro Quiz
Categories:
Receptors
Central Pathway
Physiology
Miscellaneous
Pathology
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3. Cells 100 Biconcave, aneucleated cells found in blood
Receptors for 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?
What are the erythrocytes?
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4. Cells 200 The term describing all the living cells found in blood.
Receptors for 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?
What are the formed elements?
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5. Cells 300 This substance makes up 55% of the hematocrit.
Receptors for 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?
What is the Plasma ?
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6. Cells 400 In centrifuged blood this layer contains WBCs and platelets
Receptors for 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?
What is the buffy layer?
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7. Cells 500
Erythrocytes contain approximately 250 million of these protein molecules.
Receptors for 500
This is the “preferred” region of the retina.
It contains a 1:1 relationship between cones and bipolar cells.
What is the fovea centralis?
What is hemoglobin?
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8. Function 100
These blood cells as a group are involved in the immune response
Central Pathway for 100
These cells form the first-order neurons in the central visual pathway.
They innervate both rods and cones.
What are bipolar cells?
What are leukocytes?
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9. Function 200
This component of blood is the nonliving connective tissue matrix.
Central Pathway for 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?
What is blood plasma?
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10. Function 300
These leukocytes are found in increased numbers if a person has a parasitic infection.
Central Pathway for 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?
What are eosinophils?
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11. Function 400 This element is essential in the function of hemoglobin.
Each hemoglobin molecule contains four of these atoms
Central Pathway for 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?
What is iron?
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12. Phagocytize “clean” up damaged tissues in chronic infections?
Function 500
Monocytes, an agranulocyte, are the largest leukocyte. Their main function is to?
Phagocytize “clean” up damaged tissues in chronic infections?
Central Pathway for 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. Blood Typing 100 The Blood type that carries no protein markers.
What is type O blood?
Physiology for 100
This structure is located in the anterior chamber and gives the eye its color.
What is the iris?
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14. Blood Typing 200
If a transfusion is performed with the wrong blood type, blood cells clump together.
What is agglutination?
Physiology for 200
These are the three color sensitivities on which color vision is based.
What are red, blue, and green?
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15. Blood Typing 300
If a person has type A blood, these type of antibodies would be found in their blood.
What type B antibodies?
Physiology for 300
The receptor potential in rods is due to the bleaching of this substance.
What is rhodopsin?
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16. Blood Typing 400
This blood type is the universal recipient because they have no blood serum antibodies ?
What is type AB blood?
Physiology for 400
This structure, in the human retina, absorbs light after it passes by the receptors.
What is the choroid?
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17. Blood Typing 500
A patient is Type A+ blood. These are the blood types compatible with a first transfusion.
What are types A+, A-, O+ and O-?
Physiology for 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. Pathology 100
This generic condition results in a decreased oxygen carrying capacity of the blood.
What is anemia?
Miscellaneous for 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. Pathology 200
Excessive erythrocyte production increases blood viscosity and impairs circulation.
What is polycythemia?
Miscellaneous for 200
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. Pathology 300
This sex linked genetic defect results in a deficiency of clotting factors?
What is hemophilia?
Miscellaneous for 300
This clear fluid fills the posterior chamber.
What is vitreous humor?
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21. Pathology 400
This cancer of the bone marrow may result in this condition of an overproduction of WBCs?
What is leukemia?
Miscellaneous for 400
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. Pathology 500 Bonus - You win a nanopoint? ??????? Return to
Miscellaneous for 500
Gives an object its color.
What is the frequency of light waves reflected by the visual target?
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23. Misc. 100 This term describe the process of of blood cell formation?
What is hematopoiesis?
Pathology for 100
A lesion of this structure produces monocular blindness.
What is the optic nerve?
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24. Misc. 200 This hormone stimulates hematocytoblasts to make more RBCs.?
What is erythropoeitin?
Pathology for 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. Misc. 300
This is the protein that is essential for the final stage of coagulation
The protein fibrinogen is activated by the enzyme thrombin
Pathology for 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?
What is fibrin?
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26. Misc. 400
These organs release a hormonein response to chronically low blood oxygen levels?
What are the kidneys?
Pathology for 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. Misc. 500
These protein fragments become bound to exposed collagen fibers when blood vessels are damaged staring the clotting proccess.
What are platelets?
Pathology for 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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