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Arrange the following events in a correct order that lead to the formation of an auditory impulse in human ears from the codes given below

I. Vibration is transferred from the malleus to the incus and then to stapes

II. Basiliar membrane moves up and down

III. Nerve impulse is transmitted by cochlear nerve to auditory cortex of brain for impulse analysis and recognition

IV. Sound waves pass through ear canal

V. Stereocilia of hair cells of organ of Corti rub against tectorial membrane

VI. Sound waves causes ear drum to vibrate

VII. Nerve impulse is generated

VIII. Vibrations move from fluid of vestibular canal to the fluid tymapanic canal

IX. Membrane at oval window vibrates

Codes

a)

IV, VI, I, IX, VIII, II, V, VII, III

b)

I, II, III, IV, V, VI, VII, VIII, IX

c)

IX, VIII, VII, VI, V, IV, III, II, I

d)

IV, VI, I, VIII, IX, II, V, VII, III



Question ID - 5763 | SaraNextGen Top Answer

Arrange the following events in a correct order that lead to the formation of an auditory impulse in human ears from the codes given below

I. Vibration is transferred from the malleus to the incus and then to stapes

II. Basiliar membrane moves up and down

III. Nerve impulse is transmitted by cochlear nerve to auditory cortex of brain for impulse analysis and recognition

IV. Sound waves pass through ear canal

V. Stereocilia of hair cells of organ of Corti rub against tectorial membrane

VI. Sound waves causes ear drum to vibrate

VII. Nerve impulse is generated

VIII. Vibrations move from fluid of vestibular canal to the fluid tymapanic canal

IX. Membrane at oval window vibrates

Codes

a)

IV, VI, I, IX, VIII, II, V, VII, III

b)

I, II, III, IV, V, VI, VII, VIII, IX

c)

IX, VIII, VII, VI, V, IV, III, II, I

d)

IV, VI, I, VIII, IX, II, V, VII, III

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Mechanism of Hearing

Sound waves  Tympanic membrane  Vibrations  Ear ossicles (malleus, incus and stapes). The vibrations are passed through the oval window on to the fluid of counter where they generate waves which travel to Scala vestibuli  Reissner’s membrane  Scala media  Tectorial membrane is vibrated  Tectorial membrane touches the hair cells organ of corti. As a result, nerve impulses are generated in the afferent neurons.

These impulses are carried by the afferent nerve fibres through the auditory nerve to the auditory nerve to the cortex in the temporal lobe of the cerebral hemisphere of the brain where the impulses are analysed and the sound is recognised. Ear also performs the function of balancing (equilibrium)

127 votes


127