Question

Fluid medium of blood is called as

• A. Plasma
• B. Serum
• C. Plasma protein
• D. None of the above

Answer 1

The correct option is A Plasma

Blood is a special connective tissue consisting of a fluid matrix, plasma and formed elements. Plasma is a straw coloured, viscous fluid constituting nearly 55 percent of the blood. 90-92 percent of plasma is water and proteins contribute 6-8 percent of it. Fibrinogen, globulins and albumins are the major proteins. Fibrinogens are needed for clotting or coagulation of blood. Globulins primarily are involved in defense mechanisms of the body and the albumins help in osmotic balance. Plasma also contains small amounts of minerals like Na+, Ca++, Mg++, Cl, etc. Glucose, amino acids, lipids, etc., are also present in the plasma as they are always in transit in the body. Factors for coagulation or clotting of blood are also present in the plasma in an inactive form. Plasma without the clotting factors and the plasma proteins is called serum.