Surgical anatomy : a treatise on human anatomy in its application to the practice of medicine and surgery . upon the corresponding side of the face. The mucous membrane of the tympanum lines the tympanic cavity, and iscontinuous with the mucous membrane of the Eustachian tube and with that of themastoid antrum. It forms the inner layer of the tympanic membrane, and isreflected over the ossicles, the tendons which enter the tymj^anic caAity, and thenerves of the middle ear. Middle ear disease may be followed by various comjjlications, the most com-mon of which is inflammation of the mastoid ant
Surgical anatomy : a treatise on human anatomy in its application to the practice of medicine and surgery . upon the corresponding side of the face. The mucous membrane of the tympanum lines the tympanic cavity, and iscontinuous with the mucous membrane of the Eustachian tube and with that of themastoid antrum. It forms the inner layer of the tympanic membrane, and isreflected over the ossicles, the tendons which enter the tymj^anic caAity, and thenerves of the middle ear. Middle ear disease may be followed by various comjjlications, the most com-mon of which is inflammation of the mastoid antrum and mastoid air cells, result-ing in mastoid abscess. As the mucous membrane of the middle ear is directlycontinuous with that of the mastoid antrum, it will readily be seen how theinflammatory process may extend from the nose to the naso-pharynx, Eustachiantube, tympanum, mastoid antrum, and mastoid cells. Through carious destruction of the tegmen antri or tegmen tympani or PLATE CCLV. Head of malleus Tejrmeii tympan Suspensory ligament of malleus,Chorda tympani Posterior ligament of incus. Orifice of Eustachian tube Tensor tympani mInternal surface of mernbrana tympan Handle of malleus INTERNAL VIEW OF RIGHT TYM422 THE ORGAN OF HEARING. 423 through the perivascular lymphatics and the veins which pierce the tegmen,extradural abscess, meningitis, thrombosis of the superior petrosal sinus, andcerebral and cerebellar abscess may result from otitis media and mastoid of the sigmoid sinus and consequent septic embolism may occur byextension of the inflammation along the veins from the mastoid antrum, mastoidcells, and t3mpanum which empty into the sigmoid sinus. In otitis media .the pus usually escapes b)^ perforation of the membranatympani, and may pass out through the Eustachian tube into the pharynx, orthrough the canal for the tensor tympani muscle. In mastoid disease the pususually escapes through the tjaiipanum and membrana tympani, and maj, afte
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
