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# Phospholipids * **Triglyceride derivatives**: They are derivatives of triglycerides in which one fatty acid has been replaced by a phosphate group. * **Amphiphilic molecule**: It is an amphiphilic molecule, meaning it has both hydrophobic and hydrophilic properties. * **Partially hydrophobic and...

# Phospholipids * **Triglyceride derivatives**: They are derivatives of triglycerides in which one fatty acid has been replaced by a phosphate group. * **Amphiphilic molecule**: It is an amphiphilic molecule, meaning it has both hydrophobic and hydrophilic properties. * **Partially hydrophobic and hydrophilic**: The molecule is partially hydrophobic (water-fearing) and hydrophilic (water-loving). ## Lecithin * **Key lipid substance**: Lecithin is a key lipid substance produced by the liver. * **Building block of cell membranes**: It is a key building block of cell membranes. * **Combination of molecules**: It is a combination of glycolipids, triglycerides, and phospholipids. * **Transporting fats and cholesterol**: It is ideal for transporting fats and cholesterol. ## Eicosanoids * **Signaling hormones**: Eicosanoids are signaling hormones. * **Multiple functions**: They exert control over multiple functions in the body. Examples include the inflammatory response and immunity. * **Messengers for the CNS**: They act as messengers for the central nervous system (CNS).