. The anatomical record. Anatomy; Anatomy. SPOLIA ANATOMICA ADDENDA I 485 oblique direction; it too is normal in appearance. The com- bined sinuses extended only about half way beneath the sella. The ostia are normal in size and position. The nasal cavity is capacious but normal in appearance and the conchae, except the superior, are small. There are four conchae on the left side, the posterior ethmoidal cell opening into the supreme meatus. At about the midpoint of the ventral (anterior) portion of the lateral wall of the right sinus immediately beneath its roof there is an oval defect (fig.
. The anatomical record. Anatomy; Anatomy. SPOLIA ANATOMICA ADDENDA I 485 oblique direction; it too is normal in appearance. The com- bined sinuses extended only about half way beneath the sella. The ostia are normal in size and position. The nasal cavity is capacious but normal in appearance and the conchae, except the superior, are small. There are four conchae on the left side, the posterior ethmoidal cell opening into the supreme meatus. At about the midpoint of the ventral (anterior) portion of the lateral wall of the right sinus immediately beneath its roof there is an oval defect (fig. Id) The longest diameter of this oval defect measures 7 mm. and extends antero-laterally, lying a'most in a horizontal plane and making forty-five degrees with. Fig. 2 The same as figure 1; cranial view. a saggital plane. The short diam^eter measm-es only mm. Through this opening a diverticulum of the sinal lining, which is 6 mm. long, protrudes into the subdural space. The wall of this diverticulum is verj^ thin, nowhere adherent to the exceed- ingly thin ( mm.) but regular margin of the defect and can be inverted with entire ease. It extends slightly forward and up- ward into a triangular space bounded by the optic nerve antero- medially, the carotid artery postero-medially and the reflection of the dura laterally (fig. 2) The dura, which surrounds the base of the diverticulum on all sides, does not envelop or cover the defect but merely comes into contact with the encephahc surface of the bony margin bounding the defect. Hence it is evident that the mucous diverticulum extended directly into. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bardeen, Charles Russell, 1871-1935, ed; Boyden, Edward A. (Edward Allen), 1886-1976; Bremer, John Lewis, 1874- ed; Hardesty, Irving, b. 1866, ed; American Assoc
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
