3D Models Related Images

Retracted Cerebellum to Permit Complete Fourth Ventricle Exposure

Surgical Correlation

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Retracted Cerebellum to Permit Complete Fourth Ventricle Exposure. The cerebellum has been retracted to permit complete visualization of the tela choroidea and choroid plexus within the inferior fourth ventricle. The floor of the fourth ventricle, including the medially-placed median eminence and the more lateral vestibular area, are seen.  The tela choroidea, from which the choroid plexus arises, forms the lower portion of the roof of the fourth ventricle and has an opening, the foramen of Magendie, located at the caudal end of the fourth ventricle. The telovelar junction is the line of attachment connecting the tela choroidea to the inferior medullary velum (not pictured). The contents of the jugular foramen and internal auditory canal are both well demonstrated within the image. (Image courtesy of M Nunez)

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