Question

state five functions of blood

Answer 1

Functions of Blood

1.]Transports:

Dissolved gases (e.g. oxygen, carbon dioxide)

Waste products of metabolism (e.g. water, urea)

Hormones

Enzymes

Nutrients (such as glucose, amino acids, micro-nutrients (vitamins & minerals), fatty acids, glycerol)

Plasma proteins (associated with defence, such as blood-clotting and anti-bodies)

Blood cells (incl. white blood cells 'leucocytes', and red blood cells 'erythrocytes').

2.]Maintains Body Temperature

3.]Controls pH
The pH of blood must remain in the range 6.8 to 7.4, otherwise it begins to damage cells.

4.]Removes toxins from the body
The kidneys filter all of the blood in the body (approx. 8 pints), 36 times every 24 hours. Toxins removed from the blood by the kidneys leave the body in the urine. 
(Toxins also leave the body in the form of sweat.)

5.]Regulation of Body Fluid Electrolytes
Excess salt is removed from the body in urine, which may contain around 10g salt per day (such as in the cases of people on western diets containing more salt than the body requires).

Answer 2

. It help in transfer of oxygen
. It help in transfer of carbondioxide
. It help in transportation of harmones, wastes etc
. It also help in blood clotting.
. In help to maintain body temperature