. Diseases of the nervous system : for the general practitioner and student. ination of the superior cerebellar peduncles which disappear under theposterior quadrigeminal bodies. Between the quadrigeminal bodies dorsally and the crura ventrallylies a funnel-shaped cavity, which connects the fourth ventricle below andthe third ventricle in front, viz. aqueduct of Sylvius (Fig. 18). Interior of the Mid-brain.—A transverse section shows a ventral THE CENTRAL NERVOUS SYSTEM 21 and dorsal portion. In the ventral are seen the longitudinal pyramidalfasciculi covered by a pigmented stratum of gray mat
. Diseases of the nervous system : for the general practitioner and student. ination of the superior cerebellar peduncles which disappear under theposterior quadrigeminal bodies. Between the quadrigeminal bodies dorsally and the crura ventrallylies a funnel-shaped cavity, which connects the fourth ventricle below andthe third ventricle in front, viz. aqueduct of Sylvius (Fig. 18). Interior of the Mid-brain.—A transverse section shows a ventral THE CENTRAL NERVOUS SYSTEM 21 and dorsal portion. In the ventral are seen the longitudinal pyramidalfasciculi covered by a pigmented stratum of gray matter (locus niger).The dorsal portion (tegmentum) consists of red nuclei, in which apparentlyterminate the superior cerebellar peduncles, the gray matter surroundingthe aqueduct of Sylvius, the lamina supporting the quadrigeminal bodiesand the continuation of other formations of the medulla. STRATUMZONALB OF THALAMUS \ PULVINAB OF THALAMUS < STBA TUM ZONALE NUCLEUS OF SUPERIOR COLLICULUS MEDIAL GENICU-LATE BODY S. OPTIC TRACT LATERAL GENIC- — -ULATE BODY RED NUCLEUS. EPIPHYSIS (PINEAL BODY) s CENTBAL GBEYSTBATUM iv-— AQU^EDUCTUSCEREBBI - _ NUCLEUS OF MESENCEPHA LIC(DESCENDING)BOOT OF TBI-GEMINUS v NUCLEUS OF OCULO-MOTOR NERVE MEDIAL LONGITU-DINAL FASCICULUS INTEBPED UNCU-LAR FOSSA CEREBRAL PEDUNCLE SUBSTANTIA NIGRA FILA OF OCULOMOTOR NERVE Fig. 17.—Transverse Section through Level oe Superior Quadrigeminal Bodies. (Morris Anatomy.) The median and lateral lemniscus of the medulla are here fully devel-oped. The largest part of the latter is connected with the nucleus ofthe cochlear nerve and terminate in the posterior longitudinal bodies;they have therefore an auditory function. The median lemniscus (seeMedulla) in its upward passage, after having received sensory fibers fromthe nuclei of the cranial nerves, in reaching the mid-brain sends somefibers to the anterior quadrigeminal bodies and terminates in the Thala- 22 THE CENTRAL NERVOUS SYSTEM mus opticus and Hypothala
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervous, bookyear1913
