The dissector's guide, or, Student's companion : illustrated by numerous woodcuts, clearly exhibiting and explaining the dissection of every part of the human body . part of the right ear, and terminat-ing at the upper part of the left. The scalp is now to bereflected, by dissecting it from the upper part of the skull, theanterior part being turned over the face, and the posterior overthe back of the neck. When the upper part of the cranium hasbeen sufficiently brought into view, a piece of string may be tiedround it, to mark the course that the saw is to take. Whenthe upper part of the calvar
The dissector's guide, or, Student's companion : illustrated by numerous woodcuts, clearly exhibiting and explaining the dissection of every part of the human body . part of the right ear, and terminat-ing at the upper part of the left. The scalp is now to bereflected, by dissecting it from the upper part of the skull, theanterior part being turned over the face, and the posterior overthe back of the neck. When the upper part of the cranium hasbeen sufficiently brought into view, a piece of string may be tiedround it, to mark the course that the saw is to take. Whenthe upper part of the calvarium has been removed, the duramater is brought into sight. There is some difficulty in re-moving the skull-cap from this membrane, owing to the strongadhesions which exist between the two by the capillary ves-sels. When it is removed, a slight quantity of red coagulummay be observed, as also the external Pacchionian coverings of the brain are three in number, called themeninges ; they consist of the dura mater, tunica arachnoidea,and pia mater. The following plate is intended to illustratethese membranes, as also the sinus formed by the dura * The manner of exposing the various parts of the brain, is best explainedin Shaws Manual of Anatomy, a work to which we refer the anatomicalstudent, and one which all such should have by them in the dissecting-room. THE DISSECTORS GUIDE. 185 a. Dura mater, with the meningeal artery ramifying upon 1 suPenor longitudinal sinus opened, showing the cross-bandsand the open mouths of the The pia mater, with its veins. Diagram of the Sinuses of the Dura Mater. 1. The superior longitudinal sinus. 2. The interior longitudinal sinus. 3. The two lateral sinuses. 4. The vena magna Galeni. 5. The torcular Herophili.* 6. The two cavernous sinuses. 7. The circular sinus of Ridley. 8. The superior petrosal sinus. 9. The inferior petrosal sinus. The dura mater, so named from its being of a firmer texture than theother two m
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Keywords: ., bookcentury1800, booksubjectanatomyregional, booksubjectdissecti
