"hier" . "188"^^ . "Tegmentum+Mesencephali"@en . . . "Midbrain tegmentum"@en . . "A08.186.211.132.659.822" . "802"^^ . "The midbrain tegmentum is the part of the midbrain extending from the substantia nigra to the cerebral aqueduct in a horizontal section of the midbrain. It forms the floor of the midbrain that surrounds the cerebral aqueduct."@en . "482" . "Tegmentum Mesencephali"@en .