Cardiac Cycle

• Rhythmic movement of blood that occurs with every heartbeat
• Phases: diastole and systole
• Diastole
  • Ventricles relax and fill with blood
  • Makes up approximately 2/3 of the cardiac cycle
• Systole
  • Is the heart contracting
  • Blood is pumped from the ventricles and fills the pulmonary and systemic arteries