C3.1.16—Peristalsis control
Peristalsis control links named stimuli, coordinating structures and effectors so body systems or plant tissues produce an integrated biological response.
- Syllabus
- First assessment 2025
- Objective
- C3.1.16
- Level
- HL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceMay 2023
Most common paperPaper2
Typical marks3
Common command terms
- Outline
- Identify
Scoring notes
- Common mistake
- Giving a general body-system answer without the specific pathway step for peristalsis control in the gut.
Recent exam appearances
May 2023Paper2 ["HL"] · TZ18(c)[ 3 ]C3.1.16—Peristalsis control
Practice this objective
Coverage 2023–2023 · Updated 16 Jul 2026
Concept essentials
- Peristalsis control depends on linking the stimulus to the coordinating structure or signal.
- The pathway for peristalsis control must keep information flow and response direction clear.
- Named tissues, hormones, neurons or effectors give peristalsis control its biological specificity.
- Evidence about peristalsis control is strongest when structure, mechanism and outcome are connected.