IB Biology HL 3.1.16 Peristalsis control Question Bank
Practise IB Biology HL 3.1.16 by analysing muscle waves and neural control that move food through the gut.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Analyse how longitudinal and circular muscle contractions generate peristaltic waves.
- Evaluate neural control of movement from the stomach through the small and large intestine.
C3.1.16—Peristalsis control question 1
[Maximum number: 3]
Fluids inside unicellular and multicellular organisms allow materials to be moved.
Outline how food is moved from the stomach to the large intestine.
a. by muscles (contracting);
b. peristalsis/waves of muscle contraction followed by relaxation;
c. longitudinal muscle pushes food along the intestine when it contracts;
d. circular muscle constricts the intestine to ensure movement only onwards/not back to stomach;
e. movement (from stomach to large intestine) via the small intestine/duodenum/ileum;
Marking guidance:
[3 max]
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