Biology 5090 · O Level · Heart

Heart — practice question

Which gives the order of contractions in one heart beat?

  • Aleft atrium and left ventricle together, pause, right atrium and right ventricle together
  • Bleft atrium, left ventricle, right atrium, right ventricle, pause
  • Cright atrium and left atrium together, right ventricle and left ventricle together, pause
  • Dright atrium, right ventricle, left atrium, left ventricle, pause

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