plasmalemmal
The plasmalemma, also known as the plasma membrane or cell membrane, is a vital biological membrane that surrounds the cytoplasm of every cell. It is composed primarily of a phospholipid bilayer, with embedded proteins, cholesterol, and carbohydrates. This structure acts as a selective barrier, controlling the passage of substances into and out of the cell.
The phospholipid bilayer consists of hydrophilic (water-attracting) heads facing outward and inward, towards the aqueous environments,
Cholesterol molecules are interspersed within the phospholipid bilayer, helping to regulate membrane fluidity. Carbohydrates are often
The plasmalemma is crucial for maintaining cellular integrity, regulating homeostasis, and mediating interactions between the cell