Final answer:
The cerebral peduncle contains motor fiber bundles.
Step-by-step explanation:
The Cerebral peduncle contains the motor fiber bundles which include: Corticobulbar, Corticopontine, Corticoreticular, and corticospinal. These motor fibers are axons of motor neurons in motor nuclei of the brain stem and target skeletal muscles of the head and neck. In contrast, sensory fibers are axons of sensory ganglia that carry sensory information into the brain and target sensory nuclei, but they are not part of the cerebral peduncle. Therefore, the cerebral peduncle is associated with motor functions, particularly the initiation and regulation of voluntary movements.