Final answer:
It is true that nerve fibers cross over at the medulla oblongata, which is a process called decussation. The dorsal column-medial lemniscus pathway's axons are one example of this, as they carry touch and proprioception information and cross within the medulla.
Step-by-step explanation:
It is true that nerve fibers cross over from left to right and right to left at the medulla oblongata. This crossing (or decussation) happens in several tracts within the brainstem, one of which includes the medulla. Specifically, the axons in the dorsal column terminate in the nuclei of the medulla, where they synapse with the second neuron in their pathway.
The second neuron then projects from these nuclei and crosses the midline of the medulla (decussation). This occurs in the dorsal column-medial lemniscus pathway, which carries information about touch and proprioception. Moreover, the medulla is part of the larger structure known as the brainstem, which also includes the pons and midbrain.