The Ear And Hearing Loss Essay -- essays research papers

The Ear and H pinnaing LossThe ear is the organ of listening and counterbalance in vertebrates. The earconverts sound waves in the air, to nerve impulses which are sent to the brain,where the brain interprets them as sounds instead of vibrations. The innermostpart of the ear maintains equilibrium or balance. The vestibular apparatuscontains semicircular canals which in turn balance you. Any movement by thehead, and this apparatus sends a signal to the brain so that your reflex actionis to move your foot to balance you.The ear in humans consist three parts The outer, the gist, and theinner portions. The outer ear, or pinna, is the structure that we call in the ear.It is the skin covered flap of elastic cartilage, that sticks out from the sideof the head. It acts like a funnel catching sound and sending it to the middleportion of the ear. The middle portion contains the ear drum and the connectionbetween the pharynx and the drum, the Eustachian tube. The inner ear containsthe sen sory receptors for hearing which are enclosed in a peregrine filled chambercalled the cochlea. The outer and middle ears purposes are only to receive andamplify sound. Those parts ofd the ear are only present in amphibians andmammals, precisely the inner ear is present in all vertebrates.The ear can hear in several different ways. They are volume, pitch, andtone. Pitch is related to the absolute frequency of the sound wave. The volume dependson the amplitude or intensity of the sound wave. The greater the frequency, thehigher the pitch. Humans can hear about 30 and 20,000 waves or cycles persecond. High pitch sounds produce more of a trebly sound, while low pitchsounds produce a rumbling bass sound.When a person loses these abilities to nab sound, it is referredto as deafness. It can be caused by disease, toxic drugs, trauma, or aninherited disorder. Those causes can be classified as conductive, sensorineural,or both.A conductive hearing loss results from damage to those parts o f the earwhich transmit sound vibrations in the air to the fluids of the inner ear. Thistype of damage is usually to the eardrum or polished bones known as ossicles.Ossicles conduct sound from the eardrum to the cochlea. They cannot performsuch an action if the eardrum is perforated, if the middle ear cavity is fill... ...lly there whitethorn be a school in a hospital.Hearing devices are also available. Hearing Aids operate on battery.They amplify the sound waves that the ear would normally receive. They rangefrom $500 to $6000.INTERVIEWQuestion How did you become about this disability? Answer I was born with ahearing disabilityQ When we talk, what on the button do you hear? A The sound volume is lower but nodistortionQ Would you consider yourself hard on hearing? A No, and I say no because Ican hear when I pay attention but when I am not paying attention, it is like Iam in my own world. Also, sometimes, I can see their lips moving which signalsme to listen closely.Q Did you ever go for any treatment? A No, I didnt line up that it was necessarysince it was just a matter of paying attention.Q Do you wear any hearing devices? A No, (same reason as last question)Q Was it hard at all to communicate either as a child or as an adult? A Allthe time I face the task of someone talking to me and I dont even know it.Once someone mistakenly accused me of ignoring them.Q Do you know what your overall score was on an sonometer? A No, I was nevertested