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Explain how the ear help us to hear any sound ?
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Explain how the ear help us to hear any sound ?
Hearing depends on a series of complex steps that change sound waves in the air into electrical signals. Our auditory nerve then carries these signals to the brain. Also available: Journey of Sound to the Brain, an animated video.
Illustration showing parts of the ear, including the inner ear. From the outer ear, the inner ear consists of the ear canal and eardrum. Past the ear drum is the malleus, incus, and stapes. Further inside the ear is the cochlea. The auditory nerve leads from the cochlea to the brain.
Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum.
The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.
The bones in the middle ear amplify, or increase, the sound vibrations and send them to the cochlea, a snail-shaped structure filled with fluid, in the inner ear. An elastic partition runs from the beginning to the end of the cochlea, splitting it into an upper and lower part. This partition is called the basilar membrane because it serves as the base, or ground floor, on which key hearing structures sit.
Once the vibrations cause the fluid inside the cochlea to ripple, a traveling wave forms along the basilar membrane. Hair cells—sensory cells sitting on top of the basilar membrane—ride the wave. Hair cells near the wide end of the snail-shaped cochlea detect higher-pitched sounds, such as an infant crying. Those closer to the center detect lower-pitched sounds, such as a large dog barking.
As the hair cells move up and down, microscopic hair-like projections (known as stereocilia) that perch on top of the hair cells bump against an overlying structure and bend. Bending causes pore-like channels, which are at the tips of the stereocilia, to open up. When that happens, chemicals rush into the cells, creating an electrical signal.
The auditory nerve carries this electrical signal to the brain, which turns it into a sound that we recognize and understand.
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Most Upvoted Answer
Explain how the ear help us to hear any sound ?
Sounds enter the ear canal
Sound waves move through the ear canal and strike the eardrum.The ear drum and bones of hearing vibrate
These sound waves cause the eardrum, and the three bones (ossicles) within the middle ear, to vibrate.Fluid moves through the inner ear
The vibrations move through the fluid in the spiral shaped inner ear – known as the cochlea – and cause the tiny hair cells in the cochlea to move. The hair cells detect the movement and change it into the chemical signals for the hearing nerve.Hearing nerves communicate to the brain
The hearing nerve then sends the information to the brain with electrical impulses, where they are interpreted as sound.
Sound waves move through the ear canal and strike the eardrum.The ear drum and bones of hearing vibrate
These sound waves cause the eardrum, and the three bones (ossicles) within the middle ear, to vibrate.Fluid moves through the inner ear
The vibrations move through the fluid in the spiral shaped inner ear – known as the cochlea – and cause the tiny hair cells in the cochlea to move. The hair cells detect the movement and change it into the chemical signals for the hearing nerve.Hearing nerves communicate to the brain
The hearing nerve then sends the information to the brain with electrical impulses, where they are interpreted as sound.
Community Answer
Explain how the ear help us to hear any sound ?
Ear helps us for hearing as when sound comes and it enters through ear drum ..and then it strike upon eardrums. ..then it's 3 homes vibrates and then flute like structure that is called cocleas started vibrated then optics nerve carry massages and transfer it to Brain for further processes. ..
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Explain how the ear help us to hear any sound ? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Explain how the ear help us to hear any sound ? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Explain how the ear help us to hear any sound ?.
Explain how the ear help us to hear any sound ? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Explain how the ear help us to hear any sound ? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Explain how the ear help us to hear any sound ?.
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