A manual of anatomy . langle and downward and then backward and medially to end at the 5° OSTEOLOGY Spina angularis where the bone is grooved for the cartilaginous por-tion of the auditory tube {sulcus tubm). The more extensive marginstarts at the parietal angle, passes downward and medially to thebody; the first half (frontal) articulates with the frontal bone whilethe medial half is free and forms the inferior margin of the superiororbital fissure, which transmits the oculomotor, trochlear, ophthal-mic division of the trigeminal and the abducens nerves and theophthalmic veins. The margin the
A manual of anatomy . langle and downward and then backward and medially to end at the 5° OSTEOLOGY Spina angularis where the bone is grooved for the cartilaginous por-tion of the auditory tube {sulcus tubm). The more extensive marginstarts at the parietal angle, passes downward and medially to thebody; the first half (frontal) articulates with the frontal bone whilethe medial half is free and forms the inferior margin of the superiororbital fissure, which transmits the oculomotor, trochlear, ophthal-mic division of the trigeminal and the abducens nerves and theophthalmic veins. The margin then continues backward along thebody of the bone forming, posteriorly, the lingula that constitutesthe lateral boundary of the carotid groove; this is fused underneathwith the root of the pterygoid process. The remaining portion ofthis margin is directed laterally; its first part is free, forming theanterior boundary of the foramen lacerum; the rest (petrosal) is Ci rrhral siirfiifC of irieiiirr winii Si/rus ar/triosus. Carotid groovePterygoid cniinl Spinous process Groove for liusiacfiinii tubeScaphoid foi^n Internal pterygoidplnlc External pterygoid plateHaninlar processFig. 27,—The sphenoid bone seen from behind. (Sobotta and McMurrich.) rough for articulation with the petrous part of the temporal bone andends as the spina angularis. In the broad root of origin of the greaterwing are seen three foraminaj the foramen rotundum (for the trans-mission of the maxillary division of the trigeminal nerve); the largef-oramen ovale (for the transmission of the mandibular division of thetrigeminal nerve and a branch of the middle meningeal artery); theforamen spinosuyn (for the transmission of the middle meningeal arteryand vein and the nervus spinosum, from the mandibular division ofthe trigeminal nerve). The cerebral surface of this wing is concaveand exhibits the foregoing foramina and may also show impressionsof the gyri of the temporal lobe of the brain and a sulcus
Size: 2214px × 1129px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
