The Ear, The Middle, And The Inner Ear

When a person with normal hearing hears the sound travels along the ear then bounces against the ear drum. The eardrum, the bones inside, and the cochlea vibrate and move thousands of tiny hairs inside the ear. When these hairs move an electrical response occurs. This electrical response goes to the hearing nerve and then it is send to the brain.

The ear is an extraordinary human organ that many people take for granted until it doesn’t function. It is the only device that allows the human to hear sounds in their environment. The ear is made up of many parts that distinguish various sounds through different means. The ear anatomy and physiology along with how sound waves are transmitted into meaningful sounds will help one understand how hearing loss occurs.

The physiology of hearing starts with a vibration that occurs in the air which sends an acoustic signal to the ear drum. The signal is transduced into a mechanical signal that transmits through the inner ear and the cochlear nerve. Finally, the signal is

Twenty-six percent of infants ears demonstrated hearing loss during the first year of life, and 78% of children’s ears demonstrated hearing loss during the study period. Of the children’s ears with hearing loss, 100% had a conductive component and 26% had an additional sensorineural component (mixed hearing loss…Common temporal bone findings included thickening and sclerosis of the

The middle ear consists of three bones, the malleus, incus, and stapes. The tensor teympany which is a muscle that attaches to the malleus bone, as well as the stapes which is a muscle which attaches to the stapes bone. These muscles help to keep the bone off of the membrane that they are on to stop damage from loud noise. And lastly there is a Eustachian tube which is the middle ear as well it helps with pressure.

The middle ear has three ossicles (tiny bones) the hammer, the anvil, and the stirrup that connect the middle ear to the inner ear. When sound enters your middle ear, it causes the ossicles to vibrate. These vibrations then move into the cochlea, which is filled with fluid. When the vibrations move the fluid that is in the cochlea, it stimulates tiny hair cells that respond to different frequencies of sound. After the tiny hair cells are stimulated, they direct the frequencies of sound into the auditory nerve, as nerve impulses. (ASHA 2013)

The ear is made up of three parts, the outer ear, the middle ear and the inner ear. The ability to hear is dependent on these three parts of the ear working together, and a problem with any part can cause hearing loss (heaing loss education centre, 2012). The inner ear consists of the cochlea, the auditory hearing nerve and the brain. These are the organs of hearing and balance and convert sound waves into nerve signals. These signals are sent to the brain using a nerve called the vestibulocochlear nerve. Nerve deafness occurs if there is damage to the inner ear and although it is possible to regain some hearing through the help of a hearing device, nerve deafness is often permanent. (deaf websites, 2013)

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energy from the vibrations is centered in other smaller areas of the bones. Once a sound is

Just like the eyes the ears also have a good amount of layers. The first layer is the outer ear that is made from skin and cartilage, and due to its curvy shape our ears are able to catch the sound. The sound then travels from the outer ear to the tympanic membrane, this membrane forms the eardrum and vibrates in order to respond to sound waves. From the membrane the sound moves to the inner ear, the inner ear has three very small bones. These small bones send the sound information to the brain through the auditory nerve.

A condition of the middle ear and it mainly affects the stapes (tiny stirrup) bone is considered as otosclerosis. When the bones (ossicles) combine together into an immovable mass, and does not transmit sound as well as when they are more flexible. It can also affect the other ossicles, the malleus and incus, and the otic capsule as well. Otosclerosis can cause gradual hearing loss and severe inner pain of the ear. Hearing aids and surgery are the best treatments.

Different frequencies reach their peak at different positions along the tube, which allows the cochlea to distinguish them. Researchers have found that the spiral shape significantly enhances the “vibrational motions” that translate into nerve signals. However, if the cochlear is damaged it is obvious how important the development of the cochlear implant is. Essentially the cochlear implant serves as a bypass for damaged sections of the ear, replacing the function of the ineffective hair cells.

Ear irrigation is a procedure to wash dirt and wax out of your ear canal. It is also called lavage. You may need ear irrigation if you are having trouble hearing because of a buildup of earwax. You may also have ear irrigation as part of treatment for an ear infection. Getting wax and dirt out of your ear canal can help some medicines given as ear drops work better.

The bone-anchored hearing aid, or Baha, made by CochlearTM, is a bone conduction hearing aid. The Baha is usually fitted to those who cannot wear air conduction hearing aids. The Baha is typically fit to individuals with a conductive hearing loss, but can be fit to other hearing losses. Sound vibrations travel through the outer ear to the tympanic membrane, which moves the malleus, incus, and stables, also known as the ossicles. The footplate of the stapes moves against the oval window, which creates a wave in the fluid inside the cochlea. This results in a change in pressure of the basilar membrane, moving the hair cells, which send information through the auditory nerve to the brain. A conductive hearing loss is when sounds are not conducted

The ear is made up of three parts, the outer ear, the middle ear and the inner ear. The outer ear consists of the pinnae. Its function is to focus sound on the tympanic membrane. The middle ear is where the three ossicles are containes, the Malleus, Incus,