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 . erent parts of the base of the brain, about thetuber annulare and medulla oblongata, it is merely in contact with themembrane under it, and may readily be raised from it by the assistanceof the blow-pipe. The tunica arachnoidea, like the cuticle, covers anddefends the parts under it. The pia mater, named from its tenderness, is somewhat of the natureof the former covering, but extremely vascular. It envelopes the brain,entering do
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 . erent parts of the base of the brain, about thetuber annulare and medulla oblongata, it is merely in contact with themembrane under it, and may readily be raised from it by the assistanceof the blow-pipe. The tunica arachnoidea, like the cuticle, covers anddefends the parts under it. The pia mater, named from its tenderness, is somewhat of the natureof the former covering, but extremely vascular. It envelopes the brain,entering double between all its convolutions, and lines the differentcavities called ventricles. It serves to contain and support the vessels,and allows them to divide into such minute parts, as to prevent theblood from entering the tender substance of this viscus with too muchforce. It has numerous veins ramifying over it, which terminate in thesinuses, those at the superior parts in the longitudinal sinus. The brain is divided into cerebrum and cerebellum; theformer constituting the upper and fore part; the latter, thelower and inferior part. 18S THE DISSECTORS 2 2 1. The cerebrum, divided into 2. The two hemispheres, each divided into three lobes. 3. The anterior. 4. The middle. 5. The posterior. 6. The fissura magna Sylvii, situated between the anterior and middlelobes; better seen at the base of the brain. On separating the two hemispheres, we bring into view 6. The corpus callosum, with 7. The raphe in the centre, formed by the depressions of the arteriesof the corpus callosum. 8. The linea transversa?, fibres passing laterally from the raphe. Onmaking a section, and cutting away the upper part of the hemisphere, 9. The centrum ovale of Vieussiens is brought into view. It formsthe ceiling of the lateral ventricle. 10. The cortical structure of the cerebrum. 11. The medullary structure of the cerebrum, upon which the cutvessels are seen. 12. The third ventricle opened, showin
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Keywords: ., bookcentury1800, booksubjectanatomyregional, booksubjectdissecti
