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 . Fig. 25.—Specimen From a Child, Three Years Five Months, and EightDays Old. (Series D, No. 32.)Posterior view of coronal section cut mm. posterior to nasion, sliowingthe extent of lateral and supero-inferior development of sinus maxillaris, theosseous ridge beneath nervus infraorbitalis, cellula; ethmoidales posterior,and sm
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 . Fig. 25.—Specimen From a Child, Three Years Five Months, and EightDays Old. (Series D, No. 32.)Posterior view of coronal section cut mm. posterior to nasion, sliowingthe extent of lateral and supero-inferior development of sinus maxillaris, theosseous ridge beneath nervus infraorbitalis, cellula; ethmoidales posterior,and small conchal cells developing in each concha nasalis superior. The ostiamaxillaria are larger than usual in the anteroposterior diameter. Note de-flection of septum and its influence on each concha media. ,Concha superior; , cellula; ethmoidales posterior; , conchamedia; , nervus infraorbitalis; , concha inferior; uncinatus; , cartilago septi nasi; , laminaperpendicularis. THE CELLUL^E ETHMOIDALES 71 , F r o o. \J n- Fig. 26.—Specimen From a Child Four Ye.^rs, Seven Months, and Nine-teen Days Old. (Series D, No. 40.)Anterior \ie\v of coronal section, cut 16 mm. posterior to the nasion, show-ing the lateral and supero-inferior extent of the maxillary sinuses, their rela-tions to developing teeth, and the relations of the ostium maxillare to theinfundibulum ethmoidale. Note ridge beneath the right nervus infraorbit-alis. The buUar cells have their ostia in the suprabullar furrow. The ostiaof the cellula? frontales are medial to the processus uncinatus and the bullaethmoidahs. , Cellute frontales; , celluliE bulte ethmoid-ales; , infundibulum ethmoidale; ; ostium maxillare;, nervus infraorbitalis; , sinus maxillaris; , pro-cessus uncinatus. THE ETHMOIDALES 73 ,r\-(undA q. na-
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Keywords: ., boo, bookcentury1900, booksubjectembryologyhuman, booksubjectnose
