• Pulmonary circulation is the part of the circulatory system that carries blood between the heart and lungs.
  • Oxygenated blood leaves the right ventricle through pulmonary arteries, which transport it to the lungs.
  • In the lungs, the blood gives up carbon dioxide and picks up oxygen.
  • The oxygenated blood then returns to the left atrium of the heart through pulmonary veins.
  • The systemic circulation carries the blood between heart and body.
  • It is illustrated in Figure below.
  • The main function of thecirculatory system is to pump blood carrying oxygen around the body.
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