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Cream of the Crop 1
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Cream of the Crop 1.iso
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EDUCATE
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TTTUTOR.ARJ
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MEDICAL.TTX
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1991-10-20
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768b
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11 lines
A description of the human ear ..... The external ear consists of an expanded
portion named pinna or auricle, and the auditory canal or meatus. The former
serves to collect the vibrations of the air by which sound is produced, the
latter conducts those vibrations to the tympanum. The pinna, or auricle, is
of an ovoid form, with its larger end directed upward. Its outer surface is
irregularly concave, directed slightly forward, and presents numerous
eminences and depressions which result from the foldings of its fibro-
cartilaginous element. To each of these, names have been assigned. Thus the
external prominent rim of the auricle is called the helix. Another curved
prominence, parallel with and in front of the helix, is called the antihelix.