Circulatory systems

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Circulatory systems

  1. 1. Circulatory Systems Lucia Empina Harry 116650 930518-13-6254
  2. 2. Reptile Heart ( Using Snake As An Example ) • Heart consists of three parts ; right atrium,left atrium and a ventricle. • It is a closed-loop circulatory system
  3. 3. Fish Heart It is a closed-loop circulatory • sytem • Heart consists of four parts,including two chambers and an entrace and exit • First part . SINUS VENOSUS – a thin-walled sac that collects blood from the fish’s veins before allowing it to flow to the second part • Second part. ATRIUM – a large muscular chamber, serve as oneway antechamber, that sends blood to the third part • Third part. VENTRIcle – thinwalled,muscular chamber and it pumps blood then bulbus arteriosus that connects to the aorta which blood flows to the gills for oxygenation and then out of the heart.
  4. 4. Human Heart • Closed-loop circulatory system • Heart consists of four chambers; Right and Left atrium, Left and Right Ventricle • Blood that is pumped to the RIGHT atrium is Deoxygenated which is poor in oxygen and passed into the right ventricle to be pumped through the pulmonary artery to the lungs for reoxygenation and removal of carbon dioxide. • LEFT atrium receives verly oxygenated blood from the lungs as well as the pulmonary vein which is passed into the strong left ventricle to be pumped through aorta to be different organs of the body.
  5. 5. Similarities • Closed-loop circulatory system (Blood never leaves the network of arteries, veins and capillaries) • Both have right and left atrium • Both have valves and SA nodes
  6. 6. Differences • The flow of blood in the heart
  7. 7. Blood cell ( Hematocyte ) Red Blood Cell ( Erythrocyte ) • Primarily carry oxygen and collect oxygen through the use of hemoglobin
  8. 8. Blood cell ( Hematocyte ) White Blood Cell ( Leukocytes ) • Cells of the immune system in defending the body against both infectious disease and foreign material • Produced and derived from a multipotent cell in the bone marrow as a hematopoitic stem cell • Especially in the lymphatic system
  9. 9. Blood cell ( Hematocyte ) Platelets ( Thrombocytes ) • Circulate in the blood of mammals and are invovled in hemostasis, leading to the function of blood clots

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