The cerebrum is another name for the cerebral cortex which is the part of the brain dedicated to higher activities such as complex movement (like speech), planning actions, and processing vision.
It is pretty much the entire top area of the brain, bilaterally. Consists of the frontal lobe, (the pre-motor and motor areas, the motor speech area),the parietal lobe,( the general sensory area, the...
The major descending motor tract FROM the cerebrum is the corticospinal tract. The major ascending sensory tracts TO the cerebrum are the sensorimotor tract and the dorsal column lemniscal system.