What are the Function of blood in human body|maxorbit

Function of blood in human body:

1. Transport of respiratory gases: It carries oxygen from alveoli of the lungs to the

tissues and eliminates carbon-dioxide from the tissue to the alveoli of the lungs.

2. Transport of nutrients: It carries digestive food materials absorbed by the intestine to

the tissue cells i.e. glucose, amino acid, fatty acid etc.

3. Acts as vehicle: Hormone, enzymes, vitamins and other chemicals are brought to their

places of activity through blood stream.

4. Regulation of body temperature: Blood has high water content, water make it suitable

for this property due to-

a. High specific heat

b. High thermal conductivity 

c. High latent heat of vaporization

5. Regulation of water and electrolyte balance: Fluid portion of blood is

interchangeable with the intercellular fluid of the tissue, thus maintains water and

electrolyte balance.

6. Maintenance of acid-base balance: By efficient buffering power and with the help of

kidney, skin, lungs etc blood maintains acid base balance.

7. Defensive function:

a. WBC by its phagocytic properties engulf bacteria and foreign particles.

b. It develops antibodies which combat toxic agent.

8. Excretory function: the metabolic end products and other waste products are carried

by blood to the organ of excretion i.e. kidney, lungs, skin etc.

9. Regulation of blood pressure: It regulate blood pressure by changing volume and

viscosity of blood.

10. It maintains colloidal osmotic pressure: By the action of plasma protein.

11. Prevent haemorrhage: By the process of coagulation it prevents haemorrhage