Normal Values of Lipids in Blood Plasma

 Normal Values of Lipids in Blood Plasma

Lipid Fraction	Normal Values in mg/100ml
Total Lipid	580±200
Triglycerides	148±50
Total Phospholipids	220±125
Total Cholesterol	190±100
Free Cholesterol	65±30
Free Fatty Acids	12±7

 

Element constant and Element variable

The lipids in the body physiologically remain in three components-

·        Element constant

·        Element variable

·        Brown Fat

Element constant

It is the structural fats. Cytoplasm and cell membrane of all organs are composed of element constant, so that their fat content does not diminish in starvation. Element constant is composed chiefly of phospholipids. It remains an integral part of the cell protoplasm and is essential for its life.

Element variable

This fat is not static but in a continuous state of change due to its continuous synthesis and breakdown in the body. It is composed mainly of neutral fat. It is present mostly in the fat depots or adipose tissue, viz., fatty subcutaneous layer, mesentery, omentum, intramuscular connective tissue and connective tissue around organs, viz., heart and kidney, etc. It remains as free form and represents stored energy.

 

 

Brown Fat

A third type of fat, called brown fat, which has a high metabolic rate, has been observed in infants but in adults it is found in very small amounts. It is mostly concentrated toward back and makes about 5% of body fats of an infant. Its amount decreases with age. Its main function is to prevent hypothermia in infants.

Depot Fats

Definition

It is the amount of fats found in adipose tissue and represents stored energy of body.

Amount

About12%of the total weight of a man consists of fat, major part of which remains stored in fat depots called the depot fats.

Distribution

The distribution of different depots, is as follows-

Subcutaneous tissue	50%
Perirenal tissue	15%
Mesentery	20%
Omentum	10%
Intramuscular connective tissue	05%