MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Middle Ear

Which of the ...

Question

Which of the following is not a part of the middle ear?

A

Anvil

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Hammer

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Stirrup

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Sternum

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D
Sternum

Sternum is a bone found in the chest.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Three small interlocking bones: the hammer, the anvil, and the stirrup transmit the vibrations of the eardrum to the inner ear.

Q. There are three small bones in the muddle ear – anvil, hammer and stirrup :
(a) Which of these bones is in touch with ear-drum ?
(b) Which of these bones is in touch with oval window ?

Q. Stapes bone in the middle ear of humans is stirrup shaped.

Q. Which of the following is anvil shaped ear ossicle?

Q. When a sound wave enters the ear, it sets the eardrum into oscillation, which in turn causes oscillation of 3 tiny bones in the middle ear called ossicles. This oscillation is finally transmitted to the fluid filled in inner portion of the ear termed as inner ear, the motion of the fluid disturbs hair calls within the inner ear which transmit nerve impulses to the brain with information that a sound is present. The three bones present in the middle ear are named as hammer, anvil and stirrup. Out of these the stirrup is the smallest one and this only connects the middle ear to inner ear as shown in the figure below. The area of stirrup and its extent of connection with the inner ear limits the sensitivity of the human ear. Consider a person's eat whose moving part of the eardrum has an area of about 43 mm

^{2}

and the area of stirrup is about 3.2 mm

^{2}

. The mass of ossicles is negligible. As a result, force exerted by sound wave in air on eardrum and ossicles is same as the force exerted by ossicles on the inner ear. Consider a sound wave having maximum pressure fluctuation of

3 \times 10^{- 2}

Pa from its normal equilibrium pressure value which is wqual to

10^{5}

Pa. Frequency of sound wave is 1200 Hz.
Data: Velocity of sound wave in air is 332 m/s. Velocity of sound wave in fluid (present in inner ear) is 1500 m/s. Bulk modulus of air is

1.42 \times 10^{5}

Pa. Bulk modulus of fluid is

2.18 \times 10^{9}

Find the displacement amplitude of given sound wave in the fluid of inner ear.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Ears

SCIENCE

Watch in App

explore_more_icon

Explore more

Standard IV Science

Join BYJU'S Learning Program

CrossIcon