Quain's elements of anatomy . a veitical white lamina, S-shaped in section (inner medullarylamina). The outer nucleus (e), is the larger and extends into the posteriortubercle ; it is marked externally by the radiating white lines before mentionedas passing from the thalamus into the inner capsule, and these confer upon itsexternal layer somewhat of a reticulated aspect (latticed layer). The rimernucleus (i) does not extend into the anterior tubercle, but this part of the grey sub-stance of the thalamus is cut off from it by another seiatum of white anterior separated part is the an
Quain's elements of anatomy . a veitical white lamina, S-shaped in section (inner medullarylamina). The outer nucleus (e), is the larger and extends into the posteriortubercle ; it is marked externally by the radiating white lines before mentionedas passing from the thalamus into the inner capsule, and these confer upon itsexternal layer somewhat of a reticulated aspect (latticed layer). The rimernucleus (i) does not extend into the anterior tubercle, but this part of the grey sub-stance of the thalamus is cut off from it by another seiatum of white anterior separated part is the anterior nueleus of the thalamus or nucleusof the anterior tuljercle (ei). It contains comparatively large nerve-cells andfrom its depth a number of flbres pass downwards and converge to form awell-marked bundle (bundle of Vicq-dAzyr), which entering the corpus albicansforms within that tubercle a sharp bend, and passes upwards again in the wall ofthe ventricle as the anterior pillar of the fornix. The middle commissure unites. 323 THALAMENCEPHALOK the inner nuclei across the third ventricle and is also continuous below on eachside with the grey matter of the cavity. It contains transversely coursing Sbxezand nerve-cells. In the trigonum hahenulce is a collection of nerve-cells termed by Meynert theganglion of the Jiaicnula. From this a bundle of fibres is traceable down-wards towards the interpeduncular region (the part between the cerebralpeduncles) to another collection of nerve-cells, better marked in most animalsthan in man, termed the ?hiterpedwiciilar ganglion (Voxel). The 07itcr genindate hody, darker in colour than the rest of the external nu-cleus of the thalamus to which it is attached, has a lamellated structure (, ^ ; thin layers of white fibres derived from the optic tract alternatingwith thicker layers of grej matter containing large, pigmented, multipolarnerve-cells. The actual connection of the fibres with the cells has not beentraced, but there is no
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
