A system of human anatomy, general and special . n, * A. The renifbrm fossa of the meatus auditorius internus; right temporal The ridge dividing the reniform fossa into two compartments. 2. The opening of theaqueeductus Fallopii. The openings following that of the aquoeductus Fallopii in a curveddirection require no reference. 3. The cluster of three or four oblique openings on theposterior wall of the meatus. 4. The spirally-grooved base of the cochlea. B. A section of the temporal bone, right side, showing the curved direction of themeatus auditorius externus. 1. The edge of the proc
A system of human anatomy, general and special . n, * A. The renifbrm fossa of the meatus auditorius internus; right temporal The ridge dividing the reniform fossa into two compartments. 2. The opening of theaqueeductus Fallopii. The openings following that of the aquoeductus Fallopii in a curveddirection require no reference. 3. The cluster of three or four oblique openings on theposterior wall of the meatus. 4. The spirally-grooved base of the cochlea. B. A section of the temporal bone, right side, showing the curved direction of themeatus auditorius externus. 1. The edge of the processus auditorius. 2. The grooveinto which the membrana tympani is inserted. The obliquity of the line from 2 to 3 in-dicates the oblique termination of the meatus, and the consequent oblique direction of themembrana tympani. 4, 4. The cavity of the tympanum. 5. The opening of the Eusta-chian tube. 6. Part of the aquoeductus Fallopii. 7. Part of the carotid canal. C. The annulus membranee tympani or tympanic bone of the foetal skull; right 72 TEMPORAL BONE. in the posterior border, is an irregular excavation forming part of thejugular fossa for the commencement of the internal jugular vein. Theproportion of the jugular fossa formed by the petrous portion of thetemporal bone is very different in different bones; but in all, the fossapresents a vertical ridge to its inner side, which cuts off a small por-tion of the rest. The upper part of this ridge forms a spinous projec-tion, which is called the jugular process, the groove to the inner sideof the ridge lodges the eighth pair of nerves, and the lower part of theridge is the septum of division between the jugular fossa and the ca-rotid foramen. Upon this portion of the ridge, near, the posteriormargin of the carotid foramen, is a small opening leading into a canal,which transmits the tympanic branch of the glossopharyngeal nerve(Jacobsons nerve). Between the jugular fossa and the stylo-mastoidforamen is another small openi
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectanatomy, bookyear1847
