n. (pl. tegmina) a structure that covers an organ or part of an organ. For example the tegmen tympani is the bony roof of the middle ear.
n. the region of the *midbrain below and in front of the *cerebral aqueduct. It contains the nuclei of several cranial nerves, the *reticular formation, and other ascending and descending nerve pathways linking the forebrain and the spinal cord.... tegmentum
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