221. Fluid present in the organ of corti is

A Endolymph
B Perilymph
C Cortilymph
D Plasma
Answer :   Cortilymph
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222. What conditions are developed after deficiency of vitamin A

A Night blindness
B Keratinization of cornea
C Keretinization of conjunctive
D All of the above
Answer :   All of the above
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223. The bone which is in contact with fenestra ovalis is

A Malleus
B Incus
C Stapes
D None of the above
Answer :   Stapes
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224. The sound vibration are finally exhausted in

A Organ of corti
B Fenestra rotundus
C Fenestra ovalis
D Tympanic membrane
Answer :   Fenestra rotundus
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225. A gymnast is able to balance his body upside down even in the total darkness because of :

A Vestibular apparatus
B Tectorial membrane
C Organ of corti
D Cochlea
Answer :   Vestibular apparatus
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226. Which of the following structure is not related to body balance

A Maculae
B Crista
C Organ of corti
D Ampulla
Answer :   Organ of corti
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227. Retina is most sensitive at

A optic disc
B periphery
C macula lutea
D fovea centralis
Answer :   fovea centralis
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228. Which of the following nerve supplies for organ of Corti

A Auditory
B Olfactory
C Trochlear
D Vagus
Answer :   Auditory
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229. Which structure helps a person to maintain equilibrium

A Cochlea
B Eustachian tube
C Semicircular canals
D Hammer like bone
Answer :   Semicircular canals
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230. Which of the following statements is correct for 'nodes of Ranvier' of nerve?

A Neurilemma is discontinuous
B Myelin sheath is discontinuous
C Both neurilemma and myelin sheath are discontinuous
D Covered by myelin sheath
Answer :   Myelin sheath is discontinuous
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