. The American journal of anatomy . Fig. 29 Reconstruction of the nasolacrimal passages of an adult aged sixtyyears. Note the regularity of the nasolacrimal duct and compare with figs. 30and 31. X GENESIS OF NASOLACRIMAL PASSAGES IN MAN 21. 31 Figs. 30 and 31 Reconstruction of the nasolacrimal passages of an adult agedsixty-five years. Fig. 30 represents a medial view and fig. 31 a lateral view of thereconstruction. Especially note the irregularity, clue to diverticula, of the naso-lacrimal duct. The portions indicated in black at the inferior extremity of thenasolacrimal duct is a portio
. The American journal of anatomy . Fig. 29 Reconstruction of the nasolacrimal passages of an adult aged sixtyyears. Note the regularity of the nasolacrimal duct and compare with figs. 30and 31. X GENESIS OF NASOLACRIMAL PASSAGES IN MAN 21. 31 Figs. 30 and 31 Reconstruction of the nasolacrimal passages of an adult agedsixty-five years. Fig. 30 represents a medial view and fig. 31 a lateral view of thereconstruction. Especially note the irregularity, clue to diverticula, of the naso-lacrimal duct. The portions indicated in black at the inferior extremity of thenasolacrimal duct is a portion of the inferior nasal meatus. X 22 J. PARSONS SCHAEFFER of the ostia are doubtless due to the angle at which the originalcord of cells meets the nasal mucous membrane. The position ofcontact also makes a difference. If the ostium is at the highestpoint of the inferior meatus, , just caudal to the attachmentof the inferior nasal concha to the lateral nasal wall, the openingof the nasolacrimal duct is usually a large, wide, open-mouthedostium, unguarded by folds of mucous membrane (fig. 28).If, on the other hand, the ostium is farther caudal on the lateralwall it is usually slit-like and more or less guarded by folds ofmucous me
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
