DP Biology (first assessment 2025)

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Question SPM.1A.HL.TZ0.28

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.28
Level HL Paper 1A Time zone TZ0
Command term Question number 28 Adapted from N/A
28.
[Maximum mark: 1]
SPM.1A.HL.TZ0.28

How is involuntary peristalsis in the intestine directly controlled in humans?


A.  By the endocrine system

B.  By the central nervous system (CNS)

C.  By the sympathetic nervous system

D.  By the enteric nervous system (ENS)

[1]

Markscheme

D

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