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

3. Visual System Neuro Quiz ReceptorsCentralPathwayPhysiologyMisc.Pathology 100 200 300 400 500 Click category value to begin.

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

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

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

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

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

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

10. This pathway projects from the optic chiasm to the thalamus. It consists of fibers from the ipsilateral temporal hemiretina and contralateral nasal hemiretina. Central Pathway 200 What is the optic tract? Click to reveal the question Return to Return to Game Board Game Board

11. This nucleus is the thalamic relay center for the central visual pathway. It contains the cell bodies of third- order neurons. Central Pathway 300 What is the lateral geniculate nucleus? Click to reveal the question Return to Return to Game Board Game Board

12. 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. Central Pathway 400 What are the optic radiation fibers? Click to reveal the question Return to Return to Game Board Game Board

13. 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. Click to reveal the question Return to Return to Game Board Game Board What is the calcarine sulcus?

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

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

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

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

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

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

20. Miscellaneous 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? Click to reveal the question Return to Return to Game Board Game Board

21. Miscellaneous 300 This clear fluid fills the posterior chamber. What is vitreous humor? Click to reveal the question Return to Return to Game Board Game Board

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

23. Miscellaneous 500 This portion of ambient light is what gives an object its color. What is the frequency of light waves reflected by the visual target? Click to reveal the question Return to Return to Game Board Game Board

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

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

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

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

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