. A treatise on practical anatomy: for students of anatomy and surgery . *. The base of the skull presents for examination an 64 PRACTICAL ANATOMY. external or inferior surface and an internal or superiorsurface. The external surface extends from the incisor ;•<*. *inlifitf/i Wntmit* left Nato-palM. ^ ^PaUt*. TtiiMii TrMram. tr-eM»i*n*-itkauit/yiraia,mJ^nt iTot rrnnv Fig. 29.—Base of Skui-Ij, External Subfack. teeth anteriorly back to the superior curved lines of theoccipital, and laterally to the zygomatic processes and a


. A treatise on practical anatomy: for students of anatomy and surgery . *. The base of the skull presents for examination an 64 PRACTICAL ANATOMY. external or inferior surface and an internal or superiorsurface. The external surface extends from the incisor ;•<*. *inlifitf/i Wntmit* left Nato-palM. ^ ^PaUt*. TtiiMii TrMram. tr-eM»i*n*-itkauit/yiraia,mJ^nt iTot rrnnv Fig. 29.—Base of Skui-Ij, External Subfack. teeth anteriorly back to the superior curved lines of theoccipital, and laterally to the zygomatic processes and a THE SKULL. 65 line drawn from the third root of the zygoma back tothe superior curved line of the occipital. It is exceed-ingly irregular and rough, and is divided into two por-tions,—the cranial and the facial. The former occupiesthe posterior two-thirds and the latter the anterior thirdof the base. The bones entering into the formation ofthe inferior surface of the base are, from behind forward,the occipital, two temporal, sphenoid, vomer, two palate,and two superior maxillary; in all, nine bones. About the middle of the cranial portion of the baseis the foramen magnum, the position of which variessomewhat in the different races; as a rule, it is farth


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanatomy, bookyear1891