circulatory system

• double circulatory system

  • 2 loops, one to lungs and one to body
• single circulatory system

  • one loop, includes lungs and body
• closed circulatory system

  • blood pumped around body and contained in a network of blood vessels
• open cirulatory system

  • blood inside body cavities and bathes organs
• human circulatory system

  • in one complete circuit, blood passes through the heart twice
  • right side of heart- deoxygenated blood to lungs for gas exchange(pulmonary circulatory system)
  • left side of heart- oxygenated blood to body(systemic circulatory system)
• vales in heart

  • semi lunar valves- between ventricle and artery
  • atrioventricular valves- between atria and ventricles (tricuspid-right, bicuspid-left)
  • prevent backflow of blood- ensure it is moving in one direction