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Date	November 2019	Marks available	1	Reference code	19N.1.SL.tz0.7
Level	Standard Level	Paper	Paper 1	Time zone	time zone 0
Command term	What	Question number	7	Adapted from	N/A

Question

What describes the effect of exercise on cardiac output?

Markscheme

A

Examiners report

[N/A]

Syllabus sections

Topic 2: Exercise physiology » 2.2. Structure and function of the cardiovascular system » 2.2.6. Describe the relationship between heart rate, cardiac output and stroke volume at rest and during exercise.

16M.1.SL.tz0.9:
Which of the following is correct for an athlete who is exercising at a steady pace on flat terrain for a prolonged period of time?

A. Stroke volume gradually decreases and submaximal heart rate gradually increases

B. Cardiac output gradually decreases as they get used to the exercise load

C. Stroke volume and submaximal heart rate gradually decrease

D. Stroke volume and submaximal heart rate gradually increase
16N.1.SL.tz0.7: What is the relationship between heart rate, cardiac output and stroke volume? A. Cardiac...
19M.1.SL.tz0.8: How does the heart meet the demand for oxygenated blood during physical activity? A. ...
18N.1.SL.tz0.7:
What is the equation for cardiac output?

A. Heart rate ÷ stroke volume

B. Tidal volume × frequency

C. Heart rate ÷ tidal volume

D. Stroke volume × heart rate
19M.2.SL.tz0.2b:
Explain how cardiac output is maintained during prolonged exercise.
21M.1.SL.tz0.8:
How is cardiac output calculated?

A. Heart rate × stroke volume

B. Heart rate + stroke volume

C. Heart rate + tidal volume

D. Tidal volume × stroke volume

Topic 2: Exercise physiology » 2.2. Structure and function of the cardiovascular system

Topic 2: Exercise physiology