Click to Play!

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

2. Visual SystemNeuro Quiz Click category value to begin.

3. Click to reveal the question 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? Return to Game Board

4. Click to reveal the question 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? Return to Game Board

5. Click to reveal the question 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? Return to Game Board

6. Click to reveal the question 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? Return to Game Board

7. Click to reveal the question Receptors 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? Return to Game Board

8. Click to reveal the question 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? Return to Game Board

9. Click to reveal the question 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? Return to Game Board

10. Click to reveal the question 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? Return to Game Board

11. Click to reveal the question 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? Return to Game Board

12. Click to reveal the question 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? Return to Game Board

13. Click to reveal the question Physiology 100 • This structure is located in the anterior chamber and gives the eye its color. What is the iris? Return to Game Board

14. Click to reveal the question Physiology 200 • These are the three color sensitivities on which color vision is based. What are red, blue, and green? Return to Game Board

15. Click to reveal the question Physiology 300 • The receptor potential in rods is due to the bleaching of this substance. What is rhodopsin? Return to Game Board

16. Click to reveal the question Physiology 400 • This structure, in the human retina, absorbs light after it passes by the receptors. What is the choroid? Return to Game Board

17. Click to reveal the question Physiology 500 The eyes deviate in this direction when the speaker is visually remembering images. What is up and to the left? Return to Game Board

18. Click to reveal the question 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? Return to Game Board

19. Click to reveal the question 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? Return to Game Board

20. Click to reveal the question Miscellaneous300 • This clear fluid fills the posterior chamber. What is vitreous humor? Return to Game Board

21. Click to reveal the question 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? Return to Game Board

22. Click to reveal the question 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? Return to Game Board

23. Click to reveal the question Pathology 100 • A lesion of this structure produces monocular blindness. What is the optic nerve? Return to Game Board

24. Click to reveal the question Pathology 200 • This clinical test is commonly used to examine the oculomotor system (extraocular muscles). What are the cardinal planes of gaze? Return to Game Board

25. Click to reveal the question 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? Return to Game Board

26. Click to reveal the question 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? Return to Game Board

27. Click to reveal the question 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? Return to Game Board