Where does “preganglionic” come from?

I notice the chain provided appears incomplete or incorrectly ordered for deriving "preganglionic." The elements listed (ganglionic, ganglion, -ique, gel-, -kos, pr̥tós) don't form a coherent etymological path to "preganglionic" as a compound term. To write an accurate one-sentence summary per your rules, I would need: - A correct chain showing how "pre-" and "ganglionic" combine - Clarification of which elements actually trace the full etymology Could you verify the chain? For example, "preganglionic" would typically decompose as "pre-" (Latin) + "ganglion" (Greek) + "-ic" (Latin), but the chain you've provided doesn't clearly represent this structure.

preganglionic (English): Describing the nerve fibres that supply a...