(IMAGE (TYPE "GIF")
       (PATH "gifs/Syllabus Chapters/Auditory/ckearfront.gif"))
(OUTLINE-COLOR (NAME "MAGENTA"))
(STRING-COLOR (NAME "RED"))
(PIN-COLOR (NAME "RED"))
(FRAME-INFO (STRING "Peripheral Auditory Structures. \(Image modified with permission from a drawing by C. Kaiser\). The external auditory canal \(meatus\) is closed at its medial end by the tympanic membrane. The middle ear is filled with air and contains the ossicles. The inner ear is the most central auditory compartment. It is composed of the vestibular labyrinth \(semicircular canals, utricle and saccule\) and the cochlea. These are all filled with fluid.  Portions of the cochlea and semicircular canals shown are in the petrous temporal bone. Identify the components visible in this figure. "))
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        (ACTION "tympanic membrane")
        (ID 9)
        (CENTER-PT (288 198))
        (COORD-LIST (274 171) (273 176) (273 181) (274 186) (274 191) (275 196) (277 201) (280 206) (284 211) (288 216) (293 216) (296 212) (299 208) (299 204) (298 200) (296 196) (293 192) (291 188) (289 184) (286 180) (284 176) (281 171) (277 168) (273 167) (274 171)))

(REGION (TYPE "STRUCT")
        (ACTION "ossicles")
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(REGION (TYPE "STRUCT")
        (ACTION "cochlea")
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        (CENTER-PT (363 194))
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(REGION (TYPE "STRUCT")
        (ACTION "semicircular canals")
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(REGION (TYPE "STRUCT")
        (ACTION "vestibulocochlear nerve")
        (ID 5)
        (CENTER-PT (364 154))
        (COORD-LIST (361 148) (359 153) (362 158) (367 158) (371 154) (372 150) (368 148) (361 148)))

(REGION (TYPE "STRUCT")
        (ACTION "vestibulocochlear nerve")
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        (CENTER-PT (386 135))
        (COORD-LIST (374 135) (375 140) (378 145) (383 143) (387 139) (392 136) (395 132) (396 128) (396 124) (396 120) (392 119) (388 124) (384 126) (374 135)))

(REGION (TYPE "STRUCT")
        (ACTION "middle ear cavity")
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        (CENTER-PT (292 150))
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(REGION (TYPE "STRUCT")
        (ACTION "middle ear cavity")
        (ID 2)
        (CENTER-PT (315 208))
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(REGION (TYPE "STRUCT")
        (ACTION "eustachian tube")
        (ID 1)
        (CENTER-PT (329 242))
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