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IGCSE. 2.7. The heart beat (Ms Cooper)

Опубликовано: 11 Июль 2026
на канале: Ms Cooper's IGCSE Biology
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What are the 3 stages in the heart beat?
diastole
atrial systole
ventricular systole
What regulates the heart rate?
How do you find a pulse?
Why does the heart rate increase during exercise?

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