Learn the basics · about 9 minutes
Understand the heartbeat, one idea at a time.
Three short, public lessons on normal circulation, pressure and flow, and the ECG. No clinical background required. Start with a normal heart, try one activity, and check the idea in your own time.
Where to go next
The next activities introduce disease patterns and clinical vocabulary. It is fine to revisit the basics first.
Guided simulator tutorialIntermediate · starts with severe aortic stenosis, a narrowed heart valveWaveform quizIntermediate / advanced · interpret pressure and ECG patternsCrimson Circuit mysteryAdvanced · clinical reasoning gameClinical learning & authored casesAdvanced · existing shared-password access required
Full lab · all controls, fresh normal starting scene Your progress, on this device
0 of 3 knowledge checks complete.
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This is local browser storage, not an account. It does not sync between devices or browsers. Clearing site data removes it. Your place and completed lessons are saved; replay starts activities and answers afresh.