The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . cap is removed, clusters of granular bodies areusually to be seen imbedded in the dura mater on each side of thesuperior longitudinal sinus; these are named the Pacchionian traced through the dura mater they are found to spring fromthe arachnoid. The observations of Luschka and Cleland haveproved that villous processes invariably grow from the free surfaceof that membrane, and that when these villi greatly increase in sizethey form the bodies in question. Sometimes the Pacchionianbodies
The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . cap is removed, clusters of granular bodies areusually to be seen imbedded in the dura mater on each side of thesuperior longitudinal sinus; these are named the Pacchionian traced through the dura mater they are found to spring fromthe arachnoid. The observations of Luschka and Cleland haveproved that villous processes invariably grow from the free surfaceof that membrane, and that when these villi greatly increase in sizethey form the bodies in question. Sometimes the Pacchionianbodies greatly hypertrophy, occasioning absorption of the bones of thecranial vault and depressions on the upper surface of the brain. Pia Mater.—This membrane closely invests the whole outer surfaceof the brain. It dips into the fissures between the convolutions, and Optic chiasma Optic tract Corpus geniculatum externum Corpus geniculatum intemtun Locus peiforatus posticus Middle pedimdeof the cerebellum Restiform body. Olive. Pyramid. Anterior superficial arcuate fibres Decussation ofpyramids. Optic nerve Infundibulum ?—Tuber dnereum Corpora mammillaria ?Oculo-motor nerve (III.) Trochlear nerve(IV.)winding round the cruscerebri .Trigeminal nerve (V.) Abducent nerve (VI.)Facial nerve (VII.)-Auditory nerve (VIII.) Vago-glossopharyngealnerve (IX. and X.) Hypoglossal(nerve XII.) Spinal accessorynerve (XI.) First cervical nerve After D. J. Cunninghams Text-book of Anatomy. Fig. 2.—Front View of the Medulla, Pons and Mesencephalonof a full-time Human Foetus. a wide prolongation, named velum interpositum, lies in the interiorof the cerebrum. With a little care it can be stripped off the brainwithout causing injury to its substance. At the base of the brainthe pia mater is prolonged on to the roots of the cranial membrane consists of a delicate connective tissue, in whichthe arteries of the brain and spinal cord ramify and subdivide intosmall branches before they penetrat
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
