The plasma membrane is referred to as a biological membrane or bio-membrane. Briefly, the plasma membrane may also be generally referred to as cell membrane.
Assuming the main component is phospholipis, the polar heads will be facing the aqueous solution, ie the extracellular environment and cytosol. The non-polar tails will be facing each other. This...
the plasma membrane is a vital component of cellular control in both plant and animal cells. Its responsibility is to restrict what can enter or leave the cell. this process is called homeostasis.