| Definition of 'tegmentum mesencephali' |
U.S. National Library of Medicine |
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1. tegmentum mesencephali
The portion of midbrain situated under the dorsal TECTUM MESENCEPHALI. The two ventrolateral cylindrical masses or peduncles are large nerve fiber bundles providing a tract of passage between the forebrain with the hindbrain. Ventral midbrain also contains three colorful structures: the grey matter (PERIAQUEDUCTAL GRAY), the black substance (SUBSTANTIA NIGRA), and the RED NUCLEUS.
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Definitions of tegmentum mesencephali
