Three processes focus light rays so that they form a clear image on the retina: refraction of the light rays,constriction of the pupil,and convergence of the eye.
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Q34: All muscles of the eye are involuntary.
Q35: The photo pupil reflex is an accommodation
Q36: Glaucoma is a disease in which the
Q37: Refraction means the deflection,or bending,of light rays.
Q38: Convergence of impulses from cones is common.
Q40: Visual acuity is the clearness or sharpness
Q41: Golgi tendon receptors are stimulated by touch.
Q42: Olfactory receptors and taste buds are chemoreceptors.
Q43: Exteroceptors are often called somatic senses.
Q44: From superficial to deep,the three layers of
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