Blood

1
Blood
2
Characteristics of Blood

• Heavier, thicker, more viscous than water
• Temperature of about 38oC
• Male volume 5-6 liters
• Female volume 4-5 liters
• Makes up about 7 of your total body weight

3
Composition of Blood

• Blood is primarily made up of two parts
• Formed Elements (Erythrocytes, Leucocytes,
  Thrombocytes)
• Cells
• Protein Molecules
• Solid Components
• Blood Plasma (Water, Solutes dissolved
  substances)
• Water
• Dissolved substanes
• Liquid Components
• Hematocrit Percentage of formed elements to
  plasma.

4
The Formed Elements

• Erythrocytes (Red Blood Cells)
• Main function to carry Oxygen
• Hemoglobin oxygen carrying pigment of red blood
  cells (gives them their color)
• About 5,000,000/mm3
• Look like concaved discs (no nucleus)
• Live about 120 days (old cells destroyed in
  spleen, liver, marrow)

5
The Formed Elements

• Leucocytes (White Blood Cells)
• Main function is protection of the body
• 5,000 -10,000/mm3
• Live a few hours to a few days
• Two basic categories
• Granular (Neutrophils, Eosinophils, Basophils)
• Agranular (Lymphocytes Antibodies, T-cells,
  B-cells, Monocytes)

6
The Formed Elements

• Thrombocytes (Platelets)
• Main function is to aid in blood clotting
• About 250,00-400,000/mm3
• Live about 5-9 days

7
Blood Plasma

• Yellowish (straw colored) liquid that remains
  after the formed elements are removed
• 91-92 Water
• 8-9 Dissolved substances
• Nutrients
• Gases
• Electrolytes
• Waste Products
• Enzymes
• Hormones
• Plasma Proteins (Albumins, Globulins, Fibrinogens)