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8. Blood Components: Plasma Transports Solutes
Figure 16-1: Composition of blood
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9. Blood Components:
"Blood Count" – % of Each Component
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 16-2: The blood count

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11. ������ Considered a connective tissue because it
contains cells, a liquid
ground substance (called plasma), and dissolved
protein fibers.
������ About four times more viscous (or thicker) than
water.
������ Can be broken down into its liquid and cellular
components by a
machine called a centrifuge.
������ blood is withdrawn from a vein and collected in
a centrifuge tube
������ tube is placed into the centrifuge, which then
spins it in a circular
motion for several minutes
������ rotational movement separates the blood into
liquid and cellular
components
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13. Blood Components: Cells
• Erythrocytes
• Red Blood Cells (RBC)
• O2 & CO2 transport
• White Blood Cells (WBC)
• Immune defense
• Phagocytosis
• Platelets: clotting
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14. Summary
• Blood is about 50% plasma, water solvent &
solutes: ions, elements, gasses, proteins, wastes &
nutrients
• White blood cells function in internal defense
• Iron in hemoglobin is key to RBC transport of O2
• Platelet activation initiates clot formation
• Clotting prevents blood loss but is a problem in
cardiovascular disease
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16. Hematopoiesis: Blood Cell Formation
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Figure 16-3: Hematopoiesis

17. Focus on RBCs:
• Loose their nucleus
• Cytoskeleton – shape
• Hemoglobin
• Binds O2 in heme group
• Binds some CO2 on globulin
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22. Tissue Fluid
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23. 12A
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26. Focus on RBCs:
Figure 16-7a, b: Bone marrow
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