Cardiac muscles follow a certain order of electrical conduction in order for the heart to contract. What is the correct sequence of electrical impulse?

  • __ bundle of His
  • __ atrioventricular node
  • __ bundle branches
  • __ sinoatrial node
  • __ Purkinje fibers
  • 1. sinoatrial node
  • 2. atrioventricular node
  • 3. bundle of His
  • 4. bundle branches
  • 5. Purkinje fibers