Which of the following is not matched correctly?

Auditory canal - directs sound wave to ear drum

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Eardrum - vibrates and tranmits sound waves

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Ear ossicles - amplify sound waves

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Cochlea - helps in body balance

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Solution

The correct option is D Cochlea - helps in body balance
The external auditory canal receives sound waves and directs them to the ear drum. The ear drum vibrates in response to the sound waves. The vibrations are then passed to 3 tiny bones in the middle ear called the ossicles. The ossicles amplify the sound. The vibrations are passed through the oval window on to the fluid of the cochlea. As a result, nerve impulses are generated in the associated afferent neurons. These impulses are transmitted by the afferent fibres via auditory nerves to the auditory cortex of the brain, where the impulses are analysed and the sound is recognised.
The vestibular apparatus located above the cochlea is responsible for body balance.

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Similar questions

Match the following parts of the ear with their functions.

$\begin{matrix} P a r t s o f t h e e a r & F u n c t i o n s 1. P i n n a & A . V i b r a t e s a n d t r a n s m i t s s o u n d w a v e s t o t h e o s s i c l e s 2. T y m p a n u m & B . S e n d s t h e a u d i o i m p u l s e s t o t h e c e r e b r u m 3. E a r o s s i c l e s & C . C o l l e c t s s o u n d a n d d i r e c t s i t i n t o t h e e a r 4. A u d i t o r y n e r v e & D . A m p l i f i e s a n d t r a n s m i t s t h e s o u n d t o c o c h l e a \end{matrix}$

Q. Match column I with column II and select the correct option from the given codes.

Column I	Column II
A. Pinna	(i) Collects vibrations in the air which produces sound
B. Ear canal	(ii) Passage for sound wave from pinna to ear drum
C. Tympanic membrane	(iii) Transfers sound wave to ear ossicles
D. Ear ossicles	(iv) Increases the efficiency of transmission of sound waves to the inner ear
E. Cochlea	(v) Has hearing receptors
F. Eustachian tube	(vi) Equalises the pressure on both sides of ear drum
G. Auditory nerves	(vii) Impulse transfer from organ of Corti to auditory cortex in temporal lobe of cerebrum

Arrange the following in the order of reception and transmission of the sound wave from the eardrum. Cochlear nerve, external auditory canal, drum, stapes, incus, malleus, cochlea.

Match the following parts of the ear with their functions.

\begin{matrix} C o l u m n I & C o l u m n I I i . P i n n a & a . C o l l e c t s s o u n d i i . C o c h l e a & b . R e g i o n b e t w e e n p i n n a a n d e a r d r u m i i i . A u d i t o r y c a n a l & c . T r a n s f e r s v i b r a t i o n s t o e a r o s s i c l e s i v . T y m p a n i c m e m b r a n e & d . T r a n s l a t e s s o u n d t o n e r v e i m p u l s e s v . E u s t a c h i a n t u b e & e . E q u a l i s e s p r e s s u r e b e t w e e n t h e i n n e r a n d o u t e r e a r \end{matrix}

Q. Match the following and select the correct option.

Column I	Column II
A. Auditory canal	i. Internal ear
B. Cochlea	ii. Middle ear
C. Ear ossicles	iii. External ear

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Synaptic Transmission

Standard XII Biology

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