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RETINA -
It is inverted. Innermost, sensitive layer. The part of ratina which is attached to choroid is pars optica. The part of retina attached to cilliary body is ora-serreta. In retina 2 parts are clear - (A) Pigmented layer (B) Neuro-sensory layer. Pigmented layer is of hexagonal or rectangular cells. Fusein pigment present adopted to absorb light rays. From these cells microvilli are given out to engulf extra pigment granules. Inside it, a layer of rods and cones is present. Rods are 1150 lakh and cones are 65 lakh. Rods are mone long, meant to judge abject in dim light in it rodopsin (retinine + opsine or skotoprine) present for it vitamin A (ratinol) is necessary i.e. in defficiency of vit A. night blindness (nyctalopia) is caused. Rhodopsin is known as visual purple.
How does refrigeration help to stop food from going bad? Western diets are often unhealthy due to they have too much sugar and fat, and not sufficient fibre.
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Define and compare bone modeling and remodeling Bone modeling is a surface-specific activity (apposition or resorption) that produces a net change in the sie and/or shape of a
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If molecules diffuse down their concentration gradient and achieve equal concentration throughout a container or cell, does all movement stop? Explain your answer.
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