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ULTRASOUND IMAGES • Ultrasonic waves can be used to see images of objects inside the body. • In order for ultrasonic waves to “see” an object inside the body, the wavelength of the waves used must be about the same size as the object or smaller. • A typical frequency used in an ultrasonic device is about 10 MHz. • Physicians often use ultrasonic waves to observe fetuses. • These reflected sound waves are converted to an electrical signal, forms an image on a fluorescent screen. • These images help doctors catch abnormalities that a child may have in the fetus. SENSORINERUAL HEARING LOSS • THIS OCCURS WHEN THE INNER EAR STARTS TO ACT UP. • MORE THAN 90% OF HEARING AID WEARERS HAVE SENSORINERUAL HEARING LOSS. • THE CAUSES OF SENSORINERUAL ARE: CHANGING OF AGE, NOISE EXPOSURE, BLEEDING INSIDE THE EAR, VARIOUS DISEASES (MENINGITIS, DIABETES, CHICKEN POX) ETC. • SENSORINERUAL HEARING LOSS IS PERMANENT AND THE ONLY CHOICE IS GETTING A HEARING AID. CONDUCTIVE HEARING LOSS • It occurs when sounds does not going through the ear canal, which causes you not to hear as loudly as before. • Conductive hearing loss is caused by ear wax, fluid in the middle ear, middle ear infections, and deformations. • The person with this condition may talk softly because they hear themselves loudly. The person might also have to stop chewing to hear. • The may also be permanent if it was caused by a disease otherwise medical treatment can be provided. WHAT CAUSED BEETHOVEN’S DEATH? • THE CAUSE Of BEETHOVEN’S DEATH OCCUrrED frOm Ostosclerosis. • Ostoslerosis is a disease, which an abnormal growth of the bone appears in the inner ear. • In result, the bones blocks the sound and can not be passed to the inner ear. • However, this relates to the Conductive Hearing Loss. • The bigger the bone grows the larger amount of HEAriNg lOSS iS TAkEN AWAy. THErEfOrE, BEETHOVEN’S HEAriNg WOrSENED AND HE COUlDN’T HEAr ANymOrE. PARTS OF THE EAR *However the three main parts of the ear are The Inner, Middle, and Outer Ear* • The inner ear is the hardest bone of the ear. • It transfers the sound impulses from the outer ear into electrical impulses to the brain. • The cochlea is the main part of the inner ear it converts sound waves to neural signals. • It gathers sound energy and focus it towards the ear drum. • It is covered with skin via cartilage. • This is the part of the ear where people get pierced to wear earrings. • It also collects dirt to keep the ear canal clean. • Its main function is to transfer acoustic energy from compression waves in air to fluidmembrane waves within the cochlea. Interesting facts!! • 37% of children with minimal hearing loss fail atleast one grade. • ONCE yOU lOOSE yOUr HEAriNg iT’S gONE fOrEVEr!! • Ear piercings was found on a frozen mummy in 1991.