Plasmatic Membrane

Plasma Membrane

The plasma membrane is a living, functioning part of the cell through which all nutrients entering the cell and all waste products and secretions leaving it must pass.

The plasma membrane performs essential functions that ensure the life of the cell. It regulates the flow of nutrients into the cell and the removal of waste products from it. Also, the plasma membrane maintains the difference in ion concentrations on its different sides, creating the membrane potential necessary for the functioning of the cell.

The structure of the plasma membrane ensures that it performs all these functions. It consists of a lipid bilayer in which proteins are embedded. Lipids provide the membrane with flexibility and selective permeability. Proteins perform transport and receptor functions.

Thus, the plasma membrane is a vital structure of the cell, regulating all incoming and outgoing flows of substances and maintaining membrane potential. Cell activity and survival depend on the proper functioning of the plasma membrane.