<prompt> Fibres passing through crus-cerebri are -Corticonuclear and cortricospinal fibresMedial lemniscusSpinothalamicAll  <response>: Crus cerebri contains : Middle two-third is occupied by corticospinal and corticobulbar corticonuclear fibers. Medial one-sixth is traversed by fronto-pontine fibers; and lateral one sixth contains temporopontine, parietopontine and occipitopontine fibers. 