A system of human anatomy, general and special . hanging the sella turcica, is a broad rough plate (dorsum ephip-pii), bounded at each angle by a tubercle, the posterior clinoid pro-cesses ; and behind this plate an inclining surface (clivus Blumenba-chii), which is continuous with the basilar process of the occipitalbone. On either side of the sella turcica is a broad groove {carotid),which lodges the internal Fig. carotid artery, the cavernoussinus, and the orbital external to thisgroove, at the junction of*the greater wings with thebody, are four foramina:the first i
A system of human anatomy, general and special . hanging the sella turcica, is a broad rough plate (dorsum ephip-pii), bounded at each angle by a tubercle, the posterior clinoid pro-cesses ; and behind this plate an inclining surface (clivus Blumenba-chii), which is continuous with the basilar process of the occipitalbone. On either side of the sella turcica is a broad groove {carotid),which lodges the internal Fig. carotid artery, the cavernoussinus, and the orbital external to thisgroove, at the junction of*the greater wings with thebody, are four foramina:the first is a broad interval,the sphenoidal fissure, whichseparates the greater andlesser wings, and transmits * These depressions are occasionally, as in a skull before me, converted into foraminaby the extension of a short bony pillar from the middle to the anterior clinoid process. t The superior or cerebral surface of the sphenoid bone. 1. The processus The ethmoidal spine. 3. The lesser wing of the left side. 4. The cerebral surface of 7. 74 SPHENOID BONE. the third, fourth, the three branches of the ophthalmic division of thefifth and the sixth nerves, and the ophthalmic vein. Behind andbeneath this fissure is the foramen rotundurn for the superior maxil-lary nerve; and still farther back, in the base of the spinous process,the foramen ovale for the inferior maxillary nerve, arteria meningeaparva, and nervus petrosus superficialis minor. Behind the foramenovale, near the apex of the spinous process, is the foramen spinosumfor the arteria meningea media. Upon the antero-inferior surface of the sphenoid is a long flattenedspine or crest, the superior part of which, crista sphenoidalis, articu-lates with the central lamella of the ethmoid, while the inferior part,longer and sharper, the rostrum sphenoidale, is intended to be insertedinto the sheath formed by the upper border of the vomer. On eitherside of the crista sphenoidalis is an irregular opening leading into thesphe
Size: 2106px × 1187px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubjectanatomy, bookyear1847
