FRHD 2110 Chapter Notes - Chapter 10: Respiratory Tract Infection, Congenital Syphilis, Prenatal Care
1 Dec 2016
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Document Summary
Hearing difficulties affect ~ 24000 individuals from 0-14 years of age. Public schools identify about 0. 13% of the population form 6-17 years old as deaf or hard of hearing. Close to 23% of students who are deaf in the us come from hispanic speaking home: large numbers of other non-english speaking immigrants who are deaf. Hearing divided into 3 major sections: outer. Least complex and least important for hearing: middle, inner. Most complex and most important for hearing. Outer ear consists of the auricle and the external auditory canal. Canal ends with tympanic membrane (eardrum) boundary between the outer and middle ears. Auricle part of the ear that protrudes form the side of the head: part of ear plays in the transmission of sound is minor. Sound is collected by the auricle and is funneled through the external auditory canal to the eardrum, which vibrates, sending the sound waves to the middle ear.
