1- ON THE DEVELOPMENT OF VENTRICLES
The cerebral ventricles stem from the embryonic nervous neuroepitelio of the system in development. The cerebral ventricles, the aqueduct and the central conduit of the spinal marrow are re-dressed by a cap epitelial in cubic cells and cylindrical called cells ependimarias. The presence of a prolongation is typical basal in these cells epiteliales.
The lateral ventricles are in the cerebral hemispheres and go from the frontal lobe up to the occipital lobe. Cavities constitute anfractuosas for the projections in his(her,your) interior of more or less pronounced (marked) protuberances of the cerebral substance The lateral ventricles, as well as other formations (trainings) cavitarias, there are re-dressed entirely by cells ependimales that have preserved the own(proper) characters of the ectodermal coating of the first periods of the development.
Every lateral ventricle reports with the ventricle called(named) III by means of Monro's foramen, in such a way that the liquid cefalorraquídeo contained in them can cross the whole neural pipe. The ventricle III, with an aspect in funnel with his(her,your) base up and understood(included) between(among) the optical talámos, the fórnix and the top coroides he(she) reports with the ventricle IV described to level of the bulb by means of Silvio's aqueduct. Of here the liquid cefalorraquídeo penetrates to the central channel of the epéndimo, to the center of the spinal marrow, which reaches up to the level of the vertebra II lumbar.
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