. Cunningham's Text-book of anatomy. Anatomy. THE WHITE MATTEE OF THE CEEEBEAL HEMISPHEEES. 647 direction, nearer the anterior end of the hemisphere than the posterior end, is the stem of the lateral fissure. This deep cleft divides the inferior surface into an anterior or orbital area, which rests on the orbital part of the frontal bone and is consequently concave from side to side, arid a more extensive posterior or tentorial area, which lies on the floor of the lateral part of the middle cranial fossa and upon the superior surface of the tentorium cerebelli. This surface is arched from befo
. Cunningham's Text-book of anatomy. Anatomy. THE WHITE MATTEE OF THE CEEEBEAL HEMISPHEEES. 647 direction, nearer the anterior end of the hemisphere than the posterior end, is the stem of the lateral fissure. This deep cleft divides the inferior surface into an anterior or orbital area, which rests on the orbital part of the frontal bone and is consequently concave from side to side, arid a more extensive posterior or tentorial area, which lies on the floor of the lateral part of the middle cranial fossa and upon the superior surface of the tentorium cerebelli. This surface is arched from before backwards, and looks medially as well as downwards. In its posterior two-thirds it lies above the cerebellum, from which it is separated by the tentorium cerebelli. The borders which intervene between these surfaces are the supero-medial, the superciliary, the infero-lateral, the medial occipital and medial orbital. The supero- medial border, convex from before backwards, intervenes between the convex lateral surface and the flat medial surface of the hemisphere. The superciliary border is highly arched and separates the orbital surface from the lateral surface. The infero-lateral border marks off the tentorial surface from the lateral surface. The inedial occipital border can be seen only in cases where the brain has been hardened in situ and faithfully retains the natural form. It extends from the posterior end of the hemisphere towards the posterior extremity of the corpus callosum, and inter- venes between the medial and tentorial surfaces. It is the border which lies along the straight blood sinus, and it therefore occupies the angle which is formed by the attachment of the posterior part of the falx cerebri to the superior surface of the tentorium cerebelli. The medial orbital border separates the medial from the orbital surface. The most projecting part of the anterior end of the cerebral hemisphere is called limiting sulcus area x j area y. limiting sulcus axiai sulc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
