Cell Membrane

The cell membrane, also known as the plasma membrane, is a fundamental component of all living cells, serving as a selectively permeable barrier that separates the cell's internal environment from the external milieu. Composed primarily of phospholipids, proteins, and carbohydrates, this thin, flexible structure plays crucial roles in maintaining cellular integrity, regulating the passage of molecules in and out of the cell, and facilitating communication with neighboring cells. Understanding the intricate functions and dynamics of the cell membrane is essential for comprehending various physiological processes, including cell signaling, transport, and homeostasis.