1. Myelin sheath is produced by :

A. Astrocytes and Schwann cells
B. Oligodendrocytes and Osteoclasts
C. Osteoclasts and Astrocytes
D. Schwann cells and Oligodendrocytes
Answer :   Schwann cells and Oligodendrocytes
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2. Organ of Corti is found in

A. Scala rotundes
B. Scala media
C. Scala vestibule
D. Scala tympani
Answer :   Scala media
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3. Sensitive pigmented layer of eye is

A. cornea
B. retina
C. sclerotic
D. iris
Answer :   retina
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4. Where is the cavity of vitreous humor found

A. Between sclerotic and choroid
B. Infront of lens
C. Behind lens
D. Between choroid and retina
Answer :   Behind lens
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5. In frog eyelids are

A. Functional
B. Non - functional
C. Absent
D. None of the above
Answer :   Functional
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6. In mammalian eye, the 'fovea' is the center of the visual field, where:

A. the optic nerve leaves the eye
B. only rods are present
C. more rods than cones are found
D. high density of cones occur, but has no rods
Answer :   high density of cones occur, but has no rods
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7. Supporting cells of retina

A. Dieter's cells
B. Hensen's cells
C. Mullar's cells
D. Amacrine cells
Answer :   Mullar's cells
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8. The fluid surrounding the membranous labyrinth of rabbit is called

A. Perilymph
B. Endolymph
C. Haemolymph
D. Cerebrospinal fluid
Answer :   Perilymph
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9. Cochlea arises from

A. Utriculus
B. Sacculus
C. Middle ear
D. Semicircular canals
Answer :   Sacculus
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10. Eustachian tube is related with

A. External ear
B. Middle ear
C. Internal ear
D. Auditory canal
Answer :   Middle ear
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