O-LevelBiologyRespiration5090/12 · Oct/Nov 2017 · Q171 Mark

Which structures contract to cause us to breathe out with force when sneezing?

Abronchioles

Bdiaphragm muscles

Cexternal intercostal muscles

Dinternal intercostal muscles

✓ Correct answer

D: internal intercostal muscles

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2017 Paper 1 Variant 2, question 17.

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