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IB Biology SL C3.1.16 Peristalsis Control Questions

Explore how the enteric nervous system coordinates involuntary smooth-muscle peristalsis while the CNS controls voluntary swallowing and egestion in IB Biology SL C3.1.16.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Explain that enteric nervous system signals coordinate involuntary peristaltic waves in gut smooth muscle to move material along the intestine.
  • Distinguish CNS control of voluntary swallowing or egestion from enteric control of involuntary peristalsis.

IB Biology SL C3.1.16 Peristalsis Control Questions question 1

[Maximum number: 1]

What describes the control mechanisms for peristalsis that ensure coordinated passage of material through the digestive system?

A

Voluntary control by the central nervous system

B

Involuntary control by the enteric nervous system

C

Involuntary control by the central nervous system

D

Voluntary control by the enteric nervous system

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