Development and anatomy of the nasal accessory sinuses in man; observations based on two hundred and ninety lateral nasal walls, showing the various stages and types of development of the accessory sinus areas from the sixtieth day of fetal life to advanced maturity . Tubercuiovj5 \jlcera-tlon. Fig. 40.—Specimen From -i Child Eleven Years Old. (Series D, No. 68.)Sagittal section showing the conchae nasales, the .sinus sphenoidalis, theseptum frontale, and the portion of the left sinus frontalis extending to theright of the median line. , Sinus sphenoidalis; Hypoph., hypophys
Development and anatomy of the nasal accessory sinuses in man; observations based on two hundred and ninety lateral nasal walls, showing the various stages and types of development of the accessory sinus areas from the sixtieth day of fetal life to advanced maturity . Tubercuiovj5 \jlcera-tlon. Fig. 40.—Specimen From -i Child Eleven Years Old. (Series D, No. 68.)Sagittal section showing the conchae nasales, the .sinus sphenoidalis, theseptum frontale, and the portion of the left sinus frontalis extending to theright of the median line. , Sinus sphenoidalis; Hypoph., hypophysis;, ostium pharyngeum tubte auditivEe; , meatus inferior;, meatus medius; , meatus superior; , sinus frontahs. THE SINUS MAXILLARIS 107 -bT-Vv-^ !?<-* «r-5 1-^ ? Ce 1 -i r o Probe in II \ 5 iroatSept, 1roa-t. lei .fron.^. Tos sa^c Id-cr, For. vatrdorb. Fig. 41.—Specimen From a Child Twelve , Nine , andTwelve Days Old. (Series D, No, 69.)Anterior view of a coronal section cut 12 mm. posterior to the nasion, toshow superior and lateral extent of the sinus frontales, also the relations of thecellula? I^rontales. The frontal sinuses and all cells shown in this illustrationhave their ostia medial to the uncinate processes. Note the relations of theductus nasolacrimahs. , Sinus frontahs; , septum frontale;, cellulte frontales; , fossa sacci lacrimalis; ,foramen infraorhitalis; , ductus nasolacrimahs. THE SINUS MAXILLARIS 109 after that age a ridge on the roof of the sinus, which distinctlyindicates the course of the nerve in its canal. The degreeof prominence which the ridge may assume varies greatlyin the different specimens (Figs. 25, 26, 42, and 52). In thevast majority of cases there is th
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Keywords: ., boo, bookcentury1900, booksubjectembryologyhuman, booksubjectnose
