7/28/2019 Important Questions of Physiology of Special Senses by Dr. Roomi

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Important questions of physiology of special senses by Dr. Roomi

Q.1: enlist the three components of accommodation. Briefly describe its mechanism and nervous

control. ***

Q.2: what do you understand by the concept of reduced eye? Briefly describe the errors of refractionand their correction by lenses.****

Q.3:describe the three mechanisms by which our eye canDetermine of Distance of an Object.**Q.4: describe the formation and drainage of aqueous humor. What is glaucoma?***

Q.5: draw and label rhodopsin-visual cycle. Also write down the steps of phototransduction. How the

potential of rods and cones is different from the receptors potential of other sensory organs?*****

Q.6: draw and label the visual pathway. Mention at least four lesions of this pathway and their

effects.*****

Q.7: draw and label the taste pathway, olfactory (smell) pathway and auditory pathway.***

Q.8: write notes on following:***

a) Light and dark adaptationb) Color blindness and its inheritancec) Argyll Robertson pupild) Horner syndrome and its causee) Impedance matching and its function****f) Attenuation reflex and its function****g) Nervous pathway of light reflex and accommodation reflex****h) Place principle

Q.9: explain the mechanism of sensory transduction in hair cells of internal ear.***

Q.10:explain the mechanisms by which wecandetermine the Direction from Which the Sound Comes.Q.11:Explain why images that fall on the fovea centralis are seen more clearly than images that fall onthe periphery of the retina. Why are the corners of the eyes more sensitive to light than the fovea?

Q.12:Explain the relationship between smell and taste. How are these senses similar? How do theydiffer?

Q.13:Explain how the vestibular apparatus provides information about changes in the position of ourbody in space.**