Practice question

Go with C — Vallate. Within Digestive System, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, the functional job described in the stem is exactly what Vallate does in Digestive System. Holding that picture in mind makes Vallate feel natural rather than something you only memorise. Link the term to a real body example (organ, tissue, or ion flow) so the idea stays concrete under exam pressure. A short mental diagram helps — start from stimulus or structure, follow the pathway, and stop at the functional result described by Vallate. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other.