Plasma

It is the liquid portion of the blood which is about 55% of the volume of the blood. It is mainly water which is about 90% by weight of the plasma. A large no of organic and inorganic substances are dissolved in water. Plasma is composed of organic and inorganic constituents.

(a) Inorganic constituents:

0.9% of the plasma is made up of Na, Ca ions. Which are move abundant while K, mg P and Cu ions are in lesser amounts? The cheap salt in the plasma is the Nacl.

(b) Organic Constituents:

I. 7.5% of plasma is made up of different kinds of blood portions such as serum, albumin, serum globulin, fibrinogen and prothrombin.

II. Simple :

They constitute about 0.1% in this case glucose is move abundant.

III. Product of digestion & Metabolic Wastes:

2—3% of plasma is made up of products of digestion like amino acids, fatty acids etc and metabolic wastes such as Urea, Uric acid and CO2 etc.
IV. Fats:

Neutral fats, phospholipids, cholesterol and etc.

V. Antibodies:

These are the blood proteins which provide immunity against certain diseases.

VI. Hormones:

Some blood protein is hormones interval secretion, enzymes (lipase, amylase, phosphates

VII. Coloring matter:

The yellow color of the plasma is due to small amounts of biluribin, carotene and xanthophyllin.

Posted by: Wasim Javed