Circulatory System

• The pulmonary vein brings oxygenated blood from the lungs to the left atrium of the heart.
• The aorta takes oxygenated blood from the left ventricle of the heart to the body.
• The hepatic artery carries blood to the liver.
• The hepatic portal vein carries blood from the stomach and small intestine to the liver so blood can be detoxed.
• The renal artery carries blood to the kidneys.
• The renal vein carries blood from the kidneys to the vena cava.
• The hepatic vein takes blood from the liver to the heart.
• The vena cava brings deoxygenated blood from the body to the right atrium.
• The pulmonary artery takes deoxygenated blood from the right ventricle to the lungs.
• Systemic circulation takes oxygenated blood from the heart to respiring tissues in the body and returns deoxygenated blood to the left side of the heart.
• Pulmonary circulation takes deoxygenated blood from the heart and lungs and returns oxygenated blood to the right side of the heart.
• Describe why large organisms need mass transport systems.


  They have a small surface area to volume ratio (SA:V) and a long diffusion pathway to the centre of the organism.
• Which blood vessel(s) leaves the heart?

  Aorta, pulmonary artery.
• Which blood vessel(s) brings blood back to the heart?

  Pulmonary vein, vena cava.
• What is the role of the hepatic portal vein?


  Carries blood from GI tract to liver for detoxification or for glucose conversion to glycogen.
• Describe the role of the coronary arteries.

  They transport oxygenated blood to the heart.
• Give the pathway a red blood cell takes when travelling in the human circulatory system from a kidney to the lungs.

  Renal vein; vena cave to right atrium; right ventricle to pulmonary artery.