Human anatomy, including structure and development and practical considerations . portant part of thepathway by which auditory impulses are carried friJin the reception-nuclei of the eighth ner\eto the inferior corpora c|uadrigemina, the internal geniculate body and the cerebral corte-x. Acollection of small nerve-cells, embedded within the outer angle of this tract, gives rise to anumber of its component fibres and is. therefore, known as the nucleus of the lateral fillet(nucleus lemniscus lateralis). An additional group, between the lateral fillet and the cerebellartract, constitutes the nuc
Human anatomy, including structure and development and practical considerations . portant part of thepathway by which auditory impulses are carried friJin the reception-nuclei of the eighth ner\eto the inferior corpora c|uadrigemina, the internal geniculate body and the cerebral corte-x. Acollection of small nerve-cells, embedded within the outer angle of this tract, gives rise to anumber of its component fibres and is. therefore, known as the nucleus of the lateral fillet(nucleus lemniscus lateralis). An additional group, between the lateral fillet and the cerebellartract, constitutes the nucleus tegmenii lateralis (Kolliker). The remainder of the tegmentalarea is occupied by the formatio reticularis. THE CEREBPXLUM. The cerebellum—the Httle brain, in contrast to the cerebrum or g^reatlirain—is placed in the posterior fossa of the skull and beneath the tent-like shelfof dura, the tentorium, which separates it from the overlying posterior part of the Fig. 937. Pons Anterior crescentic lohule Great horizontalfissure Postero-superiorlobule Postero-iiiferiorlobule. Middle cerebellarpeduncle .Medulla -?Xccessory flocculus FlocculusBiventral lobule Tonsil ^^^^^^^^^ / ^^^^Pyramid Posterior cerebellar notch Tuber Cerebellum viewed from in front and below; pons and medulla occupy greater part of vallecula and mask worm. cerebral hemispheres. It lies behind the pons and medulla and the fourth ventricle,with the roof of which space it is intimately related. By means of its three peduncles inferior, middle and superior—the cerebellum is connected w ith the medulla, the pons and the mid-brain respectively. The general form of the cerebellum is that of an ellipsoid, compressed fromabo\e downward and constricted, save on the dorsal aspect, by a median groo\e ofvarying proportions. Its greatest dimension is the transverse diameter, about 10 cm.(4 in. ); its least is the vertical (3 cm. ), while in the sagittal direction the cerebellummeasures about 4 cm. in the mid-line and
Size: 1997px × 1252px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
