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  1. Cell membrane - Wikipedia

    The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a semipermeable biological membrane that …

  2. Membrane | Definition, Structure, & Functions | Britannica

    Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment.

  3. Plasma Membrane (Cell Membrane)

    3 days ago · The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. In bacterial and plant …

  4. 3.1 The Cell Membrane – Anatomy & Physiology 2e

    This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out. Structure and Composition of the Cell Membrane The cell membrane is an …

  5. 4.2 The Cell Membrane – Human Physiology - lmu.pressbooks.pub

    The cell membrane of the cell is a phospholipid bilayer containing many different molecular components, including proteins and cholesterol, some with carbohydrate groups attached.

  6. Cell Membrane: Structure, Function, and Importance

    Aug 3, 2025 · Though often overshadowed by more glamorous components like the nucleus or mitochondria, the cell membrane—also known as the plasma membrane—is nothing short of …

  7. Cell Membranes | Learn Science at Scitable - Nature

    Scientists who model membrane structure and dynamics describe the membrane as a fluid mosaic in which transmembrane proteins can move laterally in the lipid bilayer.

  8. Membrane Structure - Molecular Biology of the Cell - NCBI …

    Although we focus mainly on the plasma membrane, most of the concepts discussed are applicable to the various internal membranes in cells as well. The functions of cell membranes …

  9. 3.1 The Cell Membrane - Anatomy and Physiology 2e | OpenStax

    As the outer layer of your skin separates your body from its environment, the cell membrane (also known as the plasma membrane) separates the inner contents of a cell from its exterior …

  10. Cell Membrane: Its Structure and Key Functions - Biology Insights

    Jul 22, 2025 · Explore the cell membrane’s design, a dynamic structure that controls molecular passage, facilitates communication, and provides essential cellular support.