1)Define or illustrate the following: anatomy of the ear including external-middle-and-internal ear, detail of cochlea anatomy, myopia,...

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Medical Sciences

1)Define or illustrate the following: anatomy of the earincluding external-middle-and-internal ear, detail of cochleaanatomy, myopia, hyperopia, astigmatism, primary auditory cortex,myoglobin, paranasal sinus, atlas, axis,

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1External ear consisit of AuricleExternal auditory meatus Auricle Pinna The pinna is the only visible part of the ear the auricle It has special helical shape It is the first part of the ear that reacts with sound Pinna act as funnel which assists in directing the sound further into the ear External auditory meatus External auditory canal It is the part of external year which connects Auricle with Tympanic membrane Sound waves travel For 23 cm in auditoy canal before striking tympanic membrane Tympanic membrane separate exteral ear from middle ear The eardrum tympanic membrane is a membrane at the end of the auditory canal and marks the beginning of the middle ear 2Middle ear Tympanic cavity Auditoy ossicles like Mlaleus incus and stapes Auditory ossicles order is Maleus Incus stapes from eardrum to inner ear Maleus hammer bone is attached to tympanic membrane from where vibrational sound pressure motion is passsd It also atriculate with Incus Incus It articulates with both maleus and stapes Stapes The stapes stirrup articulates with the incus and See Answer

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