Final answer:
The first termination of the Corticobulbar tract is at the Hypoglossal Nucleus and the Corticospinal tract synapses contralaterally in the spinal cord after crossing at the pyramidal decussation, influenced by the Reticular Formation.
Step-by-step explanation:
The question asks about the first terminations of the Corticobulbar and Corticospinal Tracts. The Corticobulbar tract projects from the cortex to various cranial nerve nuclei, which include the Hypoglossal Nucleus, among others, for movement of muscles in the head. The Corticospinal tract, on the other hand, initially descends ipsilaterally but most fibers cross over at the pyramidal decussation in the medulla and then proceed contralaterally to synapse with lower motor neurons throughout the length of the spinal cord, influencing movements in the limbs and trunk. Therefore, the correct answer to the question of the first termination of the Corticobulbar and Corticospinal Tracts is C. Hypoglossal Nucleus; Contralaterals to the Reticular Formation, where the Corticobulbar tract will synapse with neurons in the Hypoglossal Nucleus, while the Corticospinal tract fibers, after crossing at the pyramidal decussation, will synapse contralaterally in the spinal cord, influenced by the Reticular Formation among other structures.