Heart rate

• What is the heart rate measured in?

  Beats per minute (BPM)
• How can you measure your own pulse?


  By using your fingers on your wrist or neck
• What is the average heart rate for 14 to 16 year olds?


  Between 60 and 100 beats per minute
• What controls the heart rate?

  A group of cells located in the right atrium known as pacemaker cells
• What are the cells that control the heart rate called?

  Pacemaker cells
• Why are pacemaker cells important?


  They allow the heart to produce its own contractions independent of the nervous system
• How do pacemaker cells control the heart rate?


  By producing electrical impulses that trigger muscle contractions
• What can doctors use to measure the electrical activity of the heart?


  An ECG (electrocardiogram)
• What does an ECG produce?


  A rhythmic line that represents the heart's electrical activity
• What is an artificial pacemaker used for?


  To correct an irregular heart rate
• How are artificial pacemakers implanted?


  Surgically in the patient's chest
• What do the wires of an artificial pacemaker do?


  They carry electrical signals to control the heartbeat
• What can artificial pacemakers do for patients with malfunctioning pacemaker cells?


  They can save the life of someone whose pacemaker cells aren't working properly
• What features does the Smart Learning platform offer for GCSE revision?


  • Interactive quizzes
  • Easy to follow videos
  • Comprehensive coverage of the specification
  • AI tutor support
• What is the purpose of the ECG?


  • Measures electrical activity of the heart
  • Produces a rhythmic line representing heart function