Healthcare and medicine
The Heart

Blood pressure

  1. What is blood pressure?
  2. Learn how a stethoscope can help determine blood pressure
  3. Resistance in a tube
  4. Adding up resistance in series and in parallel
  5. Adding up resistance problem
  6. Flow and Perfusion
  7. Putting it all together: Pressure, flow, and resistance
  8. Blood pressure changes over time

Adding up resistance in series and in parallel Learn about how resistance can be added up in series and in parallel (similar to electrical circuits!). Rishi is a pediatric infectious disease physician and works at Khan Academy.

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Adding up resistance in series and in parallel

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