crus cerebri
/ˈsɛrɪbrʌɪ
/noun (plural crura cerebri) Anatomy
Either of two symmetrical tracts of nerve fibres at the base of the midbrain, linking the pons and the cerebral hemispheres.This intersecting and mingling is characteristic of association bundles, and contrasts with the orderly formation of projection tracts found in the internal capsule and crus cerebri....
- Lateral pressure on the midbrain can, however, compress the opposite crus cerebri against the free edge of the tentorium, forming an indentation in the crus known as Kernohan's notch.
- The Posterior Perforated Space corresponds to a whitish-grey substance, placed between the corpora albicantia in front, the pons Varolii behind, and the crura cerebri on either side.
Origin
Early 18th century: from Latin, literally 'leg of the brain'.