36) As we age the lens loses its ability to A) block harmful radiation. C) bend

Question

36) As we age the lens loses its ability to A) block harmful radiation. C) bend light strongly B) assume a "flattened" shape D) constrict. 37) The lateral geiniculate nucleus is NOT A) built like a club sandwich. C) folded into shape of bent knee. B) retinotopically mapped D) located in the occipital lobe. 38) Damge to the parvocellular system A) impairs depth perception. B) causes little effect if the magnocellular system remains intact. C) Results in color visiondeficits. D) impairs motion perception 39) The following is NOT TRUE about retinal ganglion cells known as Konicellular cells (K cells). A) They get inut from the blue cones found in the fovea. B) They are the same in number (quantity) as the M cells. C) They get input from blue cones. D) The K Cell pathway is heavily involved in color vision based on a blue-yellow comparison. 40) Studies of brain regions responsible for visual infomation processing reveal A) that certain processing regions are enlarged in the brains of chess masters. B) that the boundaries between visual areas are indistinct. C) that over 50% of the total cortex is involved in vision. D) that there are signiicanr differences between human and mmonkey brains.

Explanation / Answer

36) bending the light strongly.As the lens loses its elasticity, it becomes less capable of "bending" (with the help of the ciliary muscle, which also weakens with age) to properly focus light rays from different distances onto the retina. The more a lens can "bend," the closer the eye can focus.

37)retinotopically mapped

38)impairs colour percpetion and vision acuity

39)They get input from blue cones in the fovea.K cells contribute to brightness contrast information and colour contrast in species with colour vision

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