19) What is NOT true about the lens? A) Close objects cause ciliary muscles to r

Question

19) What is NOT true about the lens? A) Close objects cause ciliary muscles to relax, the lens to get to get fatter, light to bend more. B) It has more refractive power when the ciliary muscles are contracted. C) It is adjustable. D) It has greater refractive (bending) power than the cornea. 20) Retinotopic Mapping involves all of the following EXCEPT A) ganglion cells adjacent in the retina will project to cells adjacent in the LGN. B) forms an orderly map of the visual world. C) each LGN ending up with six maps of the visual world. D) providing the LGN with a visual map of the retina. 21) The human retina is said to be "inverted." this means A) that the photorecptors are located behind the rest of the retina. B) the the image formed on the retina is upside down. C) that inverebrates, like the octous have a superior retinal anatomy. D) that light is reflected off the most posterior layers of the retina. 22) Understanding Visusal illusions are of interest to researhers and others because A) all the above. B) they constitute a source of fascination to students. C) they can have practical value in visually oriented professions. D) they can potentially reveal fundamental principles of visual processing 23) All the following statements are true except A) Dipping and Injecting are Staining methods. B) Micro electrodes are used to inject dye into single cells. C) Dipping is used to show activity and density of cell bodies in sections of the visual cortex. D) Injecting method is used to stain just one or a few cells

Explanation / Answer

19. The correct answer is Option A. Ciliary muscles do not relax but contract for close distance objects.

20. The correct answer is Option D. Retinotopic mapping does not involve providing the LGN with a visual map of the retina.

21. The correct answer is Option B. The human retina is said to be “inverted” because the image formed on the retina is upside down.

22. The correct answer is Option A. Understanding visual illusions is important because of all the stated reasons.

Please post the other questions separately as we are supposed to answer just one question or or four sub parts of a question.

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