What are the mechanism of hearing?
Hearing starts with the outer ear. When a sound is made outside the outer ear, the sound waves, or vibrations, travel down the external auditory canal and strike the eardrum (tympanic membrane). The eardrum vibrates. The vibrations are then passed to 3 tiny bones in the middle ear called the ossicles.
What are the 4 steps of hearing?
The Steps of Hearing
- Outer Ear. Sound waves, which are vibrations, enter through the outer ear and reach the middle ear to vibrate the eardrum.
- Middle Ear. The eardrum then vibrates the ossicles, which are small bones in the middle ear.
- Inner Ear.
- Auditory Nerve.
What is the mechanism of sound heard by the ear?
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.
Which nerve is involved in hearing?
Each nerve has distinct nuclei within the brainstem. The vestibular nerve is primarily responsible for maintaining body balance and eye movements, while the cochlear nerve is responsible for hearing.
How we can hear sound?
The eardrum vibrations caused by sound waves move the chain of tiny bones (the ossicles – malleus, incus and stapes) in the middle ear transferring the sound vibrations into the cochlea of the inner ear.
What are the 3 types of hearing loss?
Hearing loss affects people of all ages and can be caused by many different factors. The three basic categories of hearing loss are sensorineural hearing loss, conductive hearing loss and mixed hearing loss.
What part of the brain controls your hearing?
auditory cortex
The auditory cortex is found in the temporal lobe. Most of it is hidden from view, buried deep within a fissure called the lateral sulcus. Some auditory cortex is visible on the external surface the brain, however, as it extends to a gyrus called the superior temporal gyrus.
What organ is responsible for hearing?
inner ear
The inner ear consists of a spiral shaped structure known as the cochlea (means snail-shell). Within the cochlea sits the organ of hearing where we have thousands of tiny cells, known as hair cells.