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Question 17N.3.SL.TZ0.16a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.SL.TZ0.16a
Level SL Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.SL.TZ0.16a

The diagram shows changes in the pressure and volume of the left ventricle during normal heartbeat. The phonocardiogram records heart sounds during the cardiac cycle.

[Source: Wiggers, Carl J. 1923. Modern Aspects of the Circulation in Health and Disease, 2nd ed. Philadelphia: Lea & Febiger, p. 97.]

(a)

State the relationship between pressure and volume in the left ventricle.

[1]

Markscheme

as pressure increases volume decreases

OR

inverse correlation

Accept reverse argument

Do not accept “inversely proportional”

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