. Diseases of the nervous system : for the general practitioner and student. curving lamina into three portions, viz. globus pallidus for the two innerzones and putamen for the outer zone. THE CENTRAL NERVOUS SYSTEM 31 White substance of the hemispheres is represented mainly by thefollowing portions: Corpus callosum, Internal capsule, Corona radiata,Association fibers, Fornix. Corpus Callosum.—It is a wide white commissure connecting hori-zontally both hemispheres. It is curved antero-posteriorly and coversthe lateral ventricles. The anterior extremity or knee in curving anteriorlyembraces the
. Diseases of the nervous system : for the general practitioner and student. curving lamina into three portions, viz. globus pallidus for the two innerzones and putamen for the outer zone. THE CENTRAL NERVOUS SYSTEM 31 White substance of the hemispheres is represented mainly by thefollowing portions: Corpus callosum, Internal capsule, Corona radiata,Association fibers, Fornix. Corpus Callosum.—It is a wide white commissure connecting hori-zontally both hemispheres. It is curved antero-posteriorly and coversthe lateral ventricles. The anterior extremity or knee in curving anteriorlyembraces the striate bodies and closes the lateral ventricles. Lowerdown it becomes thin, and under the name of rostrum reaches the con-volution of the corpus callosum (gyrus fornicatus). The posterior ex-tremity (splenium) lies on the quadrigeminal bodies. The upper surface GYRUS CINGULI , MEDIAL AND LATERALLONGITUDINAL STRIJEOF CORPUS CALLOSUM SEPTUM PELLUCIDUM SUBCALLOSAL GYRUSOLFACTORY BULB MEDIAL OLFACTORY STRIA LATERAL OLFACTORY STRIA. THA LA MO-MA MMILLA R YFA SCICUL US ( VICQDAZYRl)CORPUS MAMMILLARE dentate fascia or gyrusFig. 27.—Diagram showing Position of Structures Comprising the Limbic Lobe asSeen from the Mesial Aspect of the Cerebral Hemisphere. {Morris Anatomy.) is in relation with the falx cerebri, the inferior border of which containsthe inferior longitudinal sinus. Laterally it is covered by the gyrusfornicatus. The inferior surface lies on the septum lucidum in front andon the fornix posteriorly. Internal Capsule.—It is a mass of white substance situated betweenthe lenticular nucleus on its outer side and the caudate nucleus and thala-mus on its inner side. Its direction is upward and outward. It has ananterior limb (between the caudate and lenticular nuclei) directed forwardand outward, a posterior limb (between the lenticular nucleus and thala-mus) directed backward and outward, and a knee, the angle where thetwo limbs meet. Corona Radiata.—The fibers of the i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervous, bookyear1913
