Head,ear,Nose,Throat

_SLIDE_1_ Head,ear,Nose,Throat _SLIDE_2_ Contents Head & Ear 1 Nose 2 Neck 3 _SLIDE_3_ HEAD & EAR _SLIDE_4_ The skull Head _SLIDE_5_ The face Head _SLIDE_6_ Head _SLIDE_7_ Ear _SLIDE_8_ External Ear Auricle(pinna) Cartilage and skin Main functions Collection and focus of sound waves Location of sound Protection of the external ear from water and dirt External auditory ear canal S-shaped pathway (From out ear to TM) Cartilaginous framework Hair follicles Sebaceous glands : secrete cerumen Protect middle and inner ear _SLIDE_9_ External Ear _SLIDE_10_ Middle And Inner Ear An air-filled cavity by the TM Function is amplification of sound Sound waves cause the TM to vibrate Vibration is transmitted through the ossicles to the inner ear The vestibule Balance and equilibrium The semicircular canals Balance and equilibrium The cochlea Contains the organ of Corti Hearing _SLIDE_11_ Middle And Inner Ear _SLIDE_12_ NOSE _SLIDE_13_ 13 NOSE
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