The lipids are a large and diverse group of naturally occurring organic compounds that are related by their solubility in nonpolar organic solvents (e.g. ether, chloroform, acetone & benzene) and general insolubility in water.hospholipids are the main constituents of cell membranes. They resemble the triglycerides in being ester or amide derivatives of glycerol or sphingosine with fatty acids and phosphoric acid.
As of now, research doesnât clearly indicate a specific cause of rheumatoid nodules and why exactly they develop in some patients and not in others. Given they generally form on extensor joints, rheumatoid nodules could be the result of repeated pressure on the affected joints over time.
WHAT CAUSES SCHMORL'S NODULES? Schmorl's nodules tend to occur after trauma to the spine that causes wear and tear to it over time. Usually, if repeated trauma caused the formation of Schmorl's nodule, the patient does not remember a specific motion that caused the pain to begin.