Lecture 8 - Circulation Lecture 8 Learning Objectives: To...

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Lecture 8 Circulation
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Learning Objectives: To compare and contrast the three major vertebrate  circulatory systems To acquire knowledge of the major components of  blood and blood typing in transfusion and  pregnancy To acquire knowledge of the several aspects of  human cardiovascular system To describe the link between the lymphatic system  and the circulatory system
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Learning Outcomes  At the end of this lecture, students will be able to: differentiate the circulatory systems between  mammals, amphibians and reptiles describe the components of blood and the basis behind  blood typing and how it is essential in the transfusion  and pregnancy elaborate in detail the double circuits, the structure of  the heart, the cardiac cycle, the pressure and blood  flow in various blood vessels as well as the diffusion  processes at the capillaries relate the association of lymphatic system with the  circulatory system
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Opened heart showing anatomy and blood flow
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The importance of circulatory  systems
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Circulatory system can be  divided into two:   Closed circulatory system Open circulatory system
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Vertebrate Circulatory Systems          Fishes         Birds  Amphibians                                                     & Mammals
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Blood   Human Red Blood Cells, Platelets and T-lymphocyte (erythocytes = red; platelets = yellow; T-lymphocyte = light green)
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Functions of blood   A fluid connective tissue hormones. Stabilizes internal pH. Serves as a place for the reaction of phagocytes.
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Blood volume Volume depends on the body size and on the  concentrations of water and solutes.
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Components of blood Plasma Red blood cells White blood cells Platelets
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Plasma Straw-coloured liquid which floats on the red-cellular  portion. Consist of 90% of water. Transport medium for blood cells and platelets. Solvent also for – O 2 , CO 2  & nitrogen; simple sugars-dissolved in plasma. Play role in blood clotting/defense mechanism.
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Red blood cells   Erythrocytes Biconcave disks. Transport oxygen.
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Lecture 8 - Circulation Lecture 8 Learning Objectives: To...

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