Regional anatomy in its relation to medicine and surgery . ^ Dissected, Plmtojrjphed HlJ Colored from Niwrn by Geokss Mc. Clell^x, MB. Copyright, ISSI, by SnoitaE Mc Clullun,M D ArrfisIrongSCo Lilh Scsl THE REGION OF THE HEAD. 21 The cerebral surface of the dura mater is lined by the delicatearachnoid membrane (Plate 5, Fig. 1), which in the normal statefacilitates the pulsations of the underlying convolutions, owing to itsproperty of secreting a serous fluid. The amount of fluid betweenthe dura and the arachnoid tissue is inconsiderable. It is containedwithin the sub-dural space, so called
Regional anatomy in its relation to medicine and surgery . ^ Dissected, Plmtojrjphed HlJ Colored from Niwrn by Geokss Mc. Clell^x, MB. Copyright, ISSI, by SnoitaE Mc Clullun,M D ArrfisIrongSCo Lilh Scsl THE REGION OF THE HEAD. 21 The cerebral surface of the dura mater is lined by the delicatearachnoid membrane (Plate 5, Fig. 1), which in the normal statefacilitates the pulsations of the underlying convolutions, owing to itsproperty of secreting a serous fluid. The amount of fluid betweenthe dura and the arachnoid tissue is inconsiderable. It is containedwithin the sub-dural space, so called in contradistinction to the sub-arachnoid space, which is between the arachnoid membrane and the sub-jacent vascular tissue,—the pia mater. The arachnoid membrane is color-less and extremely thin over the upper surface of the hemispheres, butit becomes thicker at the base of the brain in front and behind the ponsVarolii, where it is opaque. At these localities there is always a quantityof serous fluid which serves to support the overlying brain. The arach-
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Keywords: ., boo, bookcentury1800, booksubjectanatomysurgicalandtopographical
