What Blood Is Made Of and What It Does

What Blood Is Made Of and What It Does

Composition and functions of blood.
Answer:

1. Formed elements – blood cells – 45%.

1. Erythrocytes or red blood corpuscles.
2. Leucocytes or white blood corpuscles.
3. Thrombocytes or platelets.

2. Plasma 55%

• It contains.
  1. 91-92% – water.
  2. 8-9% – solids.
     1. 1% inorganic molecule.
        • \(\mathrm{Na}^{+}, \mathrm{Ca}^{2+}, \mathrm{Mg}^{2+}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{HCo}_3^{-}, \mathrm{PO}_4^{3-}, \mathrm{Fe}^{2+}, \mathrm{Cu}^{2+},\)
     2. 8% organic molecules.
        • Plasma proteins.
        • Amino acids
        • Carbohydrates
        • Fats
        • Internal secretions.
        • Enzymes
        • Nonprotein nitrogenous substances
        • Antibodies.
  3. Gases.
     • Oxygen, carbon dioxide, nitrogen.