Cell membrane - Wikipedia
WEBThe cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of a cell from the outside environment (the extracellular space).
Cell membrane | Definition, Function, & Structure | Britannica
WEBAug 23, 2024 · Cell membrane, thin membrane that surrounds every living cell. The cell membrane functions as a barrier, keeping cell constituents in and unwanted substances out, and as a gate, allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Cell Membrane - The Definitive Guide | Biology Dictionary
WEBOct 19, 2020 · The cell membrane, also known as the plasma membrane, is a double layer of lipids and proteins that surrounds a cell. It separates the cytoplasm (the contents of the cell) from the external environment. It is a feature of all cells, both prokaryotic and eukaryotic. a 3D diagram of the cell membrane.
Membrane | Definition, Structure, & Functions | Britannica
WEBAug 26, 2024 · membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles.
3.1 The Cell Membrane – Anatomy & Physiology - Open …
WEBThe cell membrane provides a barrier around the cell, separating its internal components from the extracellular environment. It is composed of a phospholipid bilayer, with hydrophobic internal lipid “tails” and hydrophilic external phosphate “heads.”
The Cell Membrane - Structure - Function - TeachMePhysiology
WEBJul 18, 2023 · Cell membranes are an essential component of the cell, providing separation between the intracellular and extracellular environment. They are composed of lipids, proteins and carbohydrates.
Plasma Membrane - Definition, Structure, Functions - Biology …
WEBMar 26, 2019 · The plasma membrane of a cell is a network of lipids and proteins that forms the boundary between a cell’s contents and the outside of the cell. It is also simply called the cell membrane. The main function of the plasma membrane is to protect the cell from its surrounding environment.
Cell Membranes | Learn Science at Scitable - Nature
WEBCell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike...
Structure of the Plasma Membrane - The Cell - NCBI Bookshelf
WEBThe fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments. In the case of the plasma membrane, these compartments are the inside and the outside of the cell.
3.1 The Cell Membrane - Anatomy and Physiology 2e - OpenStax
WEBAs 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 environment. This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out.