O-LevelBiologyRespiration5090/12 · Oct/Nov 2018 · Q181 Mark

Which row shows the events that occur to cause air to flow into the lungs?

Ashape of the diaphragm: dome-shaped, movement of the rib cage: down and inwards

Bshape of the diaphragm: dome-shaped, movement of the rib cage: up and outwards

Cshape of the diaphragm: flattened, movement of the rib cage: down and inwards

Dshape of the diaphragm: flattened, movement of the rib cage: up and outwards

✓ Correct answer

D: shape of the diaphragm: flattened, movement of the rib cage: up and outwards

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2018 Paper 1 Variant 2, question 18.

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