A manual of otology for students and practitioners . en at theisthmus. Its direction is downward, forward and inward,the amount of obliquity varying more or less with theshape of the skull. The tube is lined with mucous mem-brane, covered with ciliated epithelium, continuouswith the mucous membrane of the t^Tnpanum and naso-pharynx. Immediately above the tube and separatedfrom it by a thin shell of bone—the processus cochleari-formis—is the tensor tympani muscle which arises fromthe base of the temporal bone and adjacent part of theEustachian tube, and is inserted into the manubrium. Ossicles.
A manual of otology for students and practitioners . en at theisthmus. Its direction is downward, forward and inward,the amount of obliquity varying more or less with theshape of the skull. The tube is lined with mucous mem-brane, covered with ciliated epithelium, continuouswith the mucous membrane of the t^Tnpanum and naso-pharynx. Immediately above the tube and separatedfrom it by a thin shell of bone—the processus cochleari-formis—is the tensor tympani muscle which arises fromthe base of the temporal bone and adjacent part of theEustachian tube, and is inserted into the manubrium. Ossicles.—The tympanic cavity contains the ossicularchain (Fig. 6). This consists of the malleus, incus, andstapes. The malleus or hammer (Fig. 7) presents ahead, neck, long and short process and handle for examina-tion. The handle or manubrium lies in the tympanicmembrane and partakes of the movements of this mem-brane and affords attachment to the tensor tympanimuscle. The short process is a small conical process 26 ANATOMY AND PHYSIOLOGY OF THE EAR. Firji. 6.—Chain of ossicles and their ligaments, seen from the front in avortical, transverse section of the tympanum. (Gerrish.)
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectear, bookyear1916
