Contents
Independent final check
Explain without the key
state / calculate
Final check
(a) State three ways of monitoring the activity of the heart. (b) A resting heart rate is 90 beats per minute. Calculate how many beats would be counted in 10 seconds.
state: give a concise answer. calculate: work out the answer from the data.
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Scope and sources
Cambridge IGCSE Biology 0610 · 2026–2028 v3 · Original learning materials.
Monitoring the heart by ECG, pulse rate and the sounds of valves closing (9.2.3); the effect of physical activity on the heart rate, investigated with a step test (9.2.4); coronary heart disease as the blockage of coronary arteries, and its possible risk factors (9.2.5); the roles of diet and exercise in reducing the risk (9.2.6); and, in the Supplement, why physical activity raises the heart rate (9.2.11). The structure of the heart and its valves is in The heart and double circulation; anaerobic respiration and the oxygen debt are in the respiration module.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus