Of several electricity concepts, the idea of  voltage  or  electrical potential  is probably the hardest to understand. Most of us are familiar with magnetic fields. Small magnets are surrounded with an invisible field which pulls upon iron, and which can attract or repel other magnets.
Plasma is a pale yellow sticky liquid. It makes up 55% of the blood s volume. The components of plasma are water 92%, dissolved protein 8%, glucose, amino acids, vitamins, minerals, urea, uric acid, CO2, hormones, antibodies.
Plasma is the straw colored liquid component of blood. Plasma is a protein-salt solution and acts as a suspension for red and white blood cells and platelets. Plasma constitutes approximately 55% of blood's volume. Plasma Composition: 90% Water. 8% Protein. 0.9% Inorganic Salts Sodium 135-146 mM.