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Precuneus

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precuneus

A division of the medial surface of each cerebral hemisphere between the cuneus and the paracentral lobule; it lies above the subparietal sulcus and is bounded anteriorly by the marginal part of the cingulate sulcus and posteriorly by the parietooccipital sulcus.

Synonym: lobulus quadratus, quadrate lobe, quadrate lobule.

Origin: pre-_ L. Cuneus, a wedge