Cell membranes consist of one lipid and two protein layers. The outer and inner layers are composed of protein molecules, and the intermediate layer consists of lipid molecules. The structure of the membrane provides good permeability for nutrients, which the body produces from the food.
Molecules of cholesterol represent one third of the lipid layer. Permanent admission of full nutrients ensures the complete health of the body. The cell can function only when a temperature of the body is normal. All physiological processes in the body are at the temperature of 36,5° C. The increase of body’s temperature above 37°C causes the body to work in a stress mode.
Physiological processes are radically changed. The efforts of the organism are directed on elimination of the infection. Pars of the lipid layer of cells interact with the hydroxyl groups of cholesterol. Chains of the fatty layer of membranes are too large to interact with cholesterol. They are also components of a fatty membrane layer. Interacting with the above mentioned groups, cholesterol increases the thickness of the fat layer of the membrane.
Despite this, the membrane is still permeable to molecules. Thickening of the lipid layer has a protective nature. The membrane protects the inner part of the cell from damage. This process keeps the cell walls from damage, ensures the longevity of the cell membrane.
This allows the cells to pass the full development process, to change its form and move in the environment. The structure of cholesterol reduces the penetration of the walls of the membrane for some components.
Cholesterol within the cell membrane performs several functions:
- to work as the transporter of the elements;
- is involved in conduction of nerve excitation along the nerve fibers;
- is watching for the safety and health of the cell membrane.
Cholesterol is essential for the exchange of internal parts of cells. The connection of cholesterol and phospholipids can influence the speed of transmission of nerve impulses through the cells of the nervous tissue. He plays the role of insulators.