Circulatory system

• Heart


  • 4 chambers
  • 2 upper atria
  • 2 lower ventricles
  • 4 blood vessels
• Atrium


  Upper chamber of the heart
• Ventricle


  Lower chamber of the heart
• Semilunar valves


  Valves found in the arteries of the heart
• Atrioventricular valves


  Valves found between the atria and ventricles
• Tricuspid valve


  Atrioventricular valve on the right side of the heart
• Bicuspid (mitral) valve


  Atrioventricular valve on the left side of the heart
• Deoxygenated blood


  Higher CO2, less O2
• Oxygenated blood


  Have more O2, less CO2
• Pulmonary circulation


  1. Deoxygenated blood from right ventricle to lungs via pulmonary artery

  2. Oxygenated blood from lungs to left atrium via pulmonary vein
• Systemic circulation


  1. Oxygenated blood from left ventricle to body via aorta

  2. Deoxygenated blood from body to right atrium via vena cava
• Hepatic circulation


  1. Deoxygenated blood from small intestine to liver via hepatic portal vein

  2. Oxygenated blood from liver to heart via hepatic vein
• Renal circulation


  1. Oxygenated blood from aorta to kidney via renal artery

  2. Deoxygenated blood from kidney to vena cava via renal vein