Haematology

Is the science that study the blood, and it's structure, function, disease, and the convenience between structure and the function.

Blood

Is highly specialized (sterile) connective tissues, which circulate in a closed system of vessels as a liquid with red color, but in out this system a solid phase will perform, which we called plug or blood clot.

Mainly we can divide blood into two parts:

1- 1 - Blood cells 

2- 2 – Plasma.

The total amount of blood approximately 8% of the total body weight or 60-70 ml/ each kilogram of body weight. Blood flows through every organ of the body providing effective communication between tissues.