Explore / Upper secondary (ages 14–16) / Biology / The heart and circulation
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- Structure of the heartNew: questions are written when you open itNew
- Blood vesselsNew: questions are written when you open itNew
- Blood componentsNew: questions are written when you open itNew
- Heart rate and the pacemakerNew: questions are written when you open itNew
- Coronary heart diseaseNew: questions are written when you open itNew
- Treatments: stents and statinsNew: questions are written when you open itNew