Zoology - Body Fluids and Circulation Question with Solution | TestHub

Plasma: Straw coloured viscous fluid forming nearly 55% of the blood.
Plasma = 90%–92% water + 6%–8% Proteins + Minerals + Simple molecules (glucose, amino acids, lipids, etc).

Major proteins in the blood are:
a. Albumins: Mainly concerned with maintaining the osmotic balance.
b. Globulins: Play an important role in the defence mechanisms of the body.
c. Fibrinogen: Required for clotting or coagulation of blood.

Minerals like Na+, Ca++, Mg++, HCO3-, Cl-, etc are present in small quantities.
Clotting factors are also present in the plasma in an inactive form.
Serum = Plasma − clotting factors.