Human anatomy, including structure and development and practical considerations . Corpus striatum Cut wall of cerebralhemisphere Pontine flexureLateral recess Cavity of hind-brain(IV ventricle) Roof of hind-brain, lower p Reconstruction of hind-brain of human embr>-o ot about three months(50 mm.), viewed from side and behind. Drawn from His model. I I02 ANATOMY. fibres are also early represented by bundles which grow centrally from the ganglion of the vagustowards the developing medulla, upon whose surface, op|)osite the junction of the dorsal andventral zones, they appear as a tlatt
Human anatomy, including structure and development and practical considerations . Corpus striatum Cut wall of cerebralhemisphere Pontine flexureLateral recess Cavity of hind-brain(IV ventricle) Roof of hind-brain, lower p Reconstruction of hind-brain of human embr>-o ot about three months(50 mm.), viewed from side and behind. Drawn from His model. I I02 ANATOMY. fibres are also early represented by bundles which grow centrally from the ganglion of the vagustowards the developing medulla, upon whose surface, op|)osite the junction of the dorsal andventral zones, they appear as a tlattened oval bundle (fasciculus solitarius). For a time super-ficial and loosely applied, this bundle gradually becomes more deeply placed in consequence ofthe extension, ventral folding, and final fusion of the rhombic lip with the remainder of the dorsalzone. Subsei|uently the fasciculus solitarius becomes still farther remove<i from the surface bythe ingrowth of tracts of nerve-fibres from the neuroblasts of the rhombic lip and from other sources until, finally, the bundle comes to liebeneath the ventricular floor where its positionpermanently indicates the junction between theoriginal dorsal and ventral zones of the medul-lary wall. In a similar manner the sensory fibresof the trigeminal nerve are applied to the sur-face of the developing pons; since, however,
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
