Complex sentence: Cranial nerves (also termed cerebral nerves), are nerves that emerge directly from the brain, specifically fore-brain and brainstem, in contrasts with the spinal nerves, which emerge from segments of the spinal cord.
Split into simpler sentences: Cranial nerves (also termed cerebral nerves), are nerves that emerge directly from the brain, specifically fore-brain and brainstem. In contrast to their homology; the spinal nerves, which emerge from segments of the spinal cord.