• Blood is composed of cells and a fluid containing many inorganic and organic molecules.
  
  
• Plasma is over 90% water and contains a variety of proteins and other molecules.

1. What is the composition of blood? It's functions?
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2. What is the composition of plasma? It's functions?
   Answer

• Blood

• Blood is composed of cells and a fluid containing many inorganic and organic molecules.
  
  
• Red blood cells are very abundant in blood and function in oxygen transport.

1. What is the structure and function of red blood cells? It's functions?
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2. What is the concentration of red blood cells in blood?
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• Blood Doping in Cyclers

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• Erythrocytes

• There are several types of white blood cells, and each type has a specific function in defending the body against disease.

1. What is the concentration of white blood cells in blood?
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2. What are the different types of white blood cells?
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3. What is the structure and function of each type?
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• Leukocytes

• Platelets are fragments of larger cells that function in blood clotting.

1. What are platelets and how do they assist blood clotting?
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2. What are other participates in blood clotting and what are their functions?
   Answer

• Artificial Blood

• An exchange of materials between blood and tissue cells takes place across cardiovascular capillary walls.
  
  
• Excess tissue fluid is absorbed by lymphatic capillaries and returned to cardiovascular veins.

1. How does the structure of a capillary suit its function?
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2. How does the exchange of materials take place across a capillary wall?
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3. What happens to excess tissue fluid created by capillary exchange?
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• Anatomy of a Capillary Bed (37.0K)

• Blood is typed according to the antigens present on red blood cells.

1. What are the different types of blood and how is it typed?
   Answer

• ABO Blood Types

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• Blood Typing