Incus is not

(1) An ear ossicle

(2) Present in middle ear

(3) Situated in between Malleus and Stapes

(4) Increases the efficiency of transmission of light waves to the inner ear

Subtopic:  Outer & Middle Ear (OLD NCERT) |
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Which of the following is not true about ear ossicles?

(1) Malleus, Incus and Stapes

(2) Ear ossicles increase the efficiency of transmission of sound waves to the inner ear.

(3) Malleus is attached to the tympanic membrane of cochlea

(4) Stapes is attached to the oval window of the cochlea

Subtopic:  Outer & Middle Ear (OLD NCERT) |
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Inner ear is

(1) Air filled inner segment

(2) Made up of two parts: Bony and Membranous

(3) Membranous labyrinth encloses bony labyrinth

(4) Membranous labyrinth is surrounded by endolymph

Subtopic:  Inner Ear: Vestibular Apparatus (OLD NCERT) |
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Find the incorrect match.

(1) Bony labyrinth- series of channels

(2) Inside of bony labyrinth- membranous labyrinth

(3) Bony labyrinth- surrounding fluid is perilymph

(4) Coiled portion of labyrinth-Cochlea

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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The fluid of membranous labyrinth in human ear is

(1) Perilymph

(2) Endolymph

(3) Otolymph

(4) Cystolymph

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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Which of the following will end at oval window(1) and terminate at round window(2) in human ear?

(1) (1) Scala media

(2) (1) Scala tympani

(3) (2) Scala tympani

(4) (2) Scala vestibuli

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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Which of the following statement is correct with respect to hair cell of internal ear?

(1) It acts as an optic receptor

(2) Its basal part is in contact of efferent nerve fibres

(3) Stereo cilia are projected from apical part of each hair cell

(4) It is arranged in columns in internal part of organ of corti

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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Semi circular canal of internal ear:

(1) Three in number

(2) Lie in different planes

(3) Perpendicular to each other

(4) All of these

Subtopic:  Inner Ear: Vestibular Apparatus (OLD NCERT) |
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Membranous canals suspended in the perilymph of the bony canals. Which of these canals we are talking about?

(1) Semicircular canals

(2) Tectorial canals

(3) Basilar canals

(4) Reissner's canals

Subtopic:  Inner Ear: Vestibular Apparatus (OLD NCERT) |
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These are the events of hearing mechanism. Arrange them in order.
a. Impulse transmission by afferent fibres via auditory nerves to the auditory cortex of the brain
b. Analysis of impulses
c. Recognition of sound
d. Passing of vibrations through oval window on to the fluid of cochlea
e. Induction of ripple in Basilar membrane
f. Receiving of sound waves and directing them to ear drum
g. Transmission of vibration through ear ossicles to oval window
h. Vibration of ear drum in response to sound waves
i. Generation of waves in the lymph of cochlea
j. Basilar membrane moves
k. Bending of hair cell
l. Impulses are generated in the associated afferent neuron
m. Pressing of hair against the Tectorial membrane
1. f-h-g-e-j-k-d-i-c-b-a-l-m
2. f-i-e-h-g-d-j-m-k-l-a-b-c
3. f-d-h-g-i-j-e-k-m-l-a-c-b
4. f-h-g-d-i-e-j-k-m-l-a-b-c

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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