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National 4 Science

National 4 Science. Human Health Pulse. Pulse. Learning intentions: What is pulse? Where in the body can pulse be felt? What low tech instruments can be used to measure pulse rate? What high tech instruments can be used to measure pulse rate?

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National 4 Science

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  1. National 4 Science Human Health Pulse

  2. Pulse • Learning intentions: • What is pulse? • Where in the body can pulse be felt? • What low tech instruments can be used to measure pulse rate? • What high tech instruments can be used to measure pulse rate? • How can pulse be used as an indicator of health?

  3. What is pulse? Pulse is caused by the swelling of the arteries as blood is pushed through them Animation

  4. Where in the body can pulse be felt? • There are many places that pulse can be felt as can be seen in the diagram • You only need to know three: • Neck • Wrist • Temple

  5. What low tech instruments can be used to measure pulse rate? • Stopwatch and finger are low tech method of measuring pulse rate • Find pulse • Count beats for 10 seconds • Multiply by 6 • Number is pulse in beats per minute

  6. What high tech instruments can be used to measure pulse rate? • A pulsometer or heart rate monitor are high tech methods of measuring pulse rate

  7. Measuring your pulse rate • Measure your pulse rate when sitting and when standing three times in order to calculate an average • What difference is there between the two values? • Why do you think there is this difference?

  8. Pulse rate as indicator of health • Pulse rate is an indicator of health • In order to find out how healthy a person is their pulse rate is measured at rest and after exercise • The following have an effect on pulse rate and therefore health: • Body size • Age • Gender • Fitness

  9. How do the factors affect pulse rate? • Body size • As body size increases pulse rate increases because heart is working harder • Age • Pulse rate is lower in adults than in children as they are less active • Gender • Pulse rate is slightly higher in women than men • Fitness • As a person increases in fitness their pulse rate decreases because their heart muscle is bigger therefore more effective at pumping blood around the body • A very high pulse rate will eventually lead to heart disease

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