Brain surgery . o the Insular Masses of is a collapsed capillary; xx indicates a solid protoplasmic offshoot of a cap-illary, which is destined to become a new vessel and subdivide one of the insularmasses into two portions. the region C, in Fig. 35) a still more detailed exposi-tion of this relation of the vessels to the neuroglialislands is presented. Here the capillaries, one of themcollapsed at yy, are seen surrounding the plugs andislands. But at xx is shown a stage of subdivision ofone of these islands by a solid protoplasmic offshootof a capillary destined to become hollowe
Brain surgery . o the Insular Masses of is a collapsed capillary; xx indicates a solid protoplasmic offshoot of a cap-illary, which is destined to become a new vessel and subdivide one of the insularmasses into two portions. the region C, in Fig. 35) a still more detailed exposi-tion of this relation of the vessels to the neuroglialislands is presented. Here the capillaries, one of themcollapsed at yy, are seen surrounding the plugs andislands. But at xx is shown a stage of subdivision ofone of these islands by a solid protoplasmic offshootof a capillary destined to become hollowed out into anew blood-vessel. Care was taken not to confoundthis solid protoplasmic process with a collapsed capil- 110 BRAIN SURGERY. lary, and it can be observed how it would divide themass in two nearly equal parts by uniting with theopposite capillary. Some of these masses of neuroglia persist as isolatedlittle islands even in the tmidst of dense connectivetissue, as shown in Fig. 37. In such instances, con-. Fig. 37. —The Minute Structure of these Neuroglial- Islands and their Persis-tence in the midst of Dense Connective Tissue. At a the filaments of the neu-roglia cells are cut transversely, and at b two tongue-like extensions of a neu-rogliar island fill up two inter-fibrillary spaces. nective-tissue fasciculi have apparently followed thecourse of the capillaries and have grown about theneuroglial islands. Fig. 37 also shows very faithfullythe minute structure of these islands. They consist ofrather large, glassy neuroglia cells completely envel-oped by their own tangled and matted process. Inthe mass indicated at a the filamentous processes are TREPHINING FOR EPILEPSY. Ill cut vertically, and at b two tongue-like processes ofneuroglia pass beneath connective-tissue fascicles andfill up two inter-fibrillary spaces. The vessel, c, has athickened or hyaline wall. Finally, it is to be noted that the cortex for somelittle distance surrounding the connective-tissue growthi
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Keywords: ., bookcentury1800, bookdecade1890, bookidbrainsur, booksubjectbrain
