[BS] Q.3) Functions of blood:

1. Transport of respiratory gasses (O2 , CO2 , N2).
2. Transport of nutrition’s such as glucose, amino acid, fatty acids etc.
3. Excretion of metabolic waste products such as urea, uric acid, creatinine from tissue to kidneys.
4. Blood has HCO3, Hb, PO4, protein buffer system to maintains buffering activity as well as maintain acid base balance.
5. Transport of hormones.
6. Take part in defense activity of body with the help of WBC.
7. Take part in blood coagulation with the help of platelets.
8. Maintains plasma colloidal osmotic pressure by the help of plasma proteins.
9. Maintains water and electrolytes balance.