Surgical treatment; a practical treatise on the therapy of surgical diseases for the use of practitioners and students of surgery . ircle of Willis,occlusion of an internal carotid, or especially of a common carotid, is apt to cause uni-lateral softening of the brain. The occlusion of both carotids, if rapid, is apt to causefatal cerebral anemia. Slow and gradual occlusion of the vessels need not destroy life(Fig. 728). 44 SURGICAL TREATMENT The motor area of the cortex of the brain, from which originate the impulses to themuscular system of the body, occupies a narrow strip of the outer surfa
Surgical treatment; a practical treatise on the therapy of surgical diseases for the use of practitioners and students of surgery . ircle of Willis,occlusion of an internal carotid, or especially of a common carotid, is apt to cause uni-lateral softening of the brain. The occlusion of both carotids, if rapid, is apt to causefatal cerebral anemia. Slow and gradual occlusion of the vessels need not destroy life(Fig. 728). 44 SURGICAL TREATMENT The motor area of the cortex of the brain, from which originate the impulses to themuscular system of the body, occupies a narrow strip of the outer surface of the gyruscentralis anterior, and extends to the depth of the central fissure (fissure of Rolando).The area extends upward to the median fissure of the cerebrum and slightly over ontothe mesial surface of the paracentral lobe. The lower limit of the motor area ends some-what short of the fissure of Sylvius. The fibers from the motor cortex pass downwardthrough the pyramidal tract. They degenerate throughout their whole extent after de-struction of their cortical cells, and muscular paralysis results. Superior long, sinus. Lateral sinus Straight sinus Fig. 728.—Sinuses of Brain, Shown by Transverse Vertical Section. The straight sinus is seen at the junction of the four lobes.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsurgery, bookyear1920
