CAIE IGCSE Biology 9.2.3 Monitoring Heart Activity
Practise describing pulse measurement and using ECG traces or valve sounds to monitor the activity of the heart.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- measure pulse at the wrist or neck by counting beats over a timed interval and converting to beats per minute
- identify an ECG as a recording of electrical activity and calculate rate from the time between repeated peaks
- state that listening to heart sounds from valves closing is another monitoring method
9.2.3—Activity of the heart may be monitored question 1
[Maximum number: 2]
A group of students investigated the effect of exercise on their heart rates.
They measured their heart rates:
- before exercise
- immediately after running 1 km
- one minute after running 1 km
Before doing the investigation they wrote a hypothesis.
The students measured their pulse as an indicator of heart rate.
Describe how the students could measure their pulse.
1 fingers on, wrist / neck / artery ;
2 number beats over a period of time / bpm ;
3 use a heart rate monitor / AW ;
4 contact of sensor with skin ;
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