. Cunningham's Text-book of anatomy. Anatomy. PAETS DERIVED FROM THE DIENCEPHALON. 617 matter which surrounds the aqueduct is directly continuous with the gray matter of the substantia perforata posterior and tuber cinereum, and in this way it comes to the surface in the base of the brain. The optic chiasma crosses the floor in front and marks the place where the latter becomes continuous with the anterior wall of the cavity. The front wall of the third ventricle is formed by the lamina terruinalis, which extends upwards from the optic chiasma. The anterior com- missure, as it crosses from one
. Cunningham's Text-book of anatomy. Anatomy. PAETS DERIVED FROM THE DIENCEPHALON. 617 matter which surrounds the aqueduct is directly continuous with the gray matter of the substantia perforata posterior and tuber cinereum, and in this way it comes to the surface in the base of the brain. The optic chiasma crosses the floor in front and marks the place where the latter becomes continuous with the anterior wall of the cavity. The front wall of the third ventricle is formed by the lamina terruinalis, which extends upwards from the optic chiasma. The anterior com- missure, as it crosses from one side to the other, projects into the ventricle, but of course it is excluded from the cavity by the ventricular epithelial lining. It may be taken as indicating the place where the roof joins the anterior wall. The roof of the third ventricle is formed by a thin epithelial layer, which is part of the thin epithelial lining of the cavity, which stretches across the median plane from one taenia thalami to the other. Applied to the superior surface of the epithelial roof Foramen interventriculare Lamina commissime hippocampi at the attach- | ment of the epithelial roof of third ventricle i Corpus callosum ; i Columna fornicis â ! j Septum pellucidum -, \ '⢠< Anterior commissure Rostrum corporis callosi Jenu corporis callosi Epithelial roof of third ventricle Lamina commissure hippocampi i Taenia thalami 'â¢â \ Vena cerebri interna i \ Plexus chorioideus vent. tert. i i ', Commissura habenul* \ 1 J Recessus suprapinealis 4-J. I i Pineal body 1 i |"T*"^LSplenium corporis callosi I I ,'^%k Lamina quadrigemina ' / /â Aquaeductus cerebri if ena magna cerebri Velum medullare anterius Lobulus centralis cerebelli / Culmen cerebelli Fissura prima cerebelli ..Fourth ventricle Attachment of ''epithelial roof. Optic chiasma â Infundibulum Hypophysis Massa intermedia . Sulcus hypothalamics / / Corpus mamillare / / Oculomotor nerve / Posterior commissure , Tegmentum (mes
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
