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Question 18M.3.SL.TZ2.d

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.SL.TZ2.d
Level SL Paper 3 Time zone TZ2
Command term Identify Question number d Adapted from N/A
d.
[Maximum mark: 1]
18M.3.SL.TZ2.d

In an experiment to explore the effect of exercise on ventilation rate, a subject breathed into a data logging sensor that measured air flow.

The graphs show the result before the subject exercised and immediately after the exercise had finished.

Identify a muscle responsible for increasing the volume of the chest cavity.

 

[1]

Markscheme

diaphragm
OR
external intercostal muscles

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