Cytoplasmic membrane
Cytoplasmic Membrane
The Cytoplasmic Membrane (pronunciation: sy-toe-plaz-mik mem-brane) is a fundamental component of all living cells.
Etymology
The term "Cytoplasmic Membrane" is derived from the Greek words 'kytos' meaning 'cell', 'plasma' meaning 'something formed or molded', and 'membrane' from the Latin 'membrana' meaning 'skin, parchment'.
Definition
The Cytoplasmic Membrane, also known as the cell membrane or plasma membrane, is a biological membrane that separates the interior of all cells from the outside environment. It is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells.
Structure
The Cytoplasmic Membrane is composed of a lipid bilayer, including phospholipids and cholesterol, and proteins such as integral proteins and peripheral proteins. The lipid bilayer forms a stable barrier between two aqueous compartments, while the proteins perform various functions including transport, signal transduction, and cell adhesion.
Function
The primary function of the Cytoplasmic Membrane is to protect the cell from its surroundings. It also regulates the transport of substances in and out of the cell, and communicates with other cells through protein receptors embedded in the membrane.
Related Terms
- Cell
- Cell Membrane
- Lipid Bilayer
- Protein Receptors
- Phospholipids
- Cholesterol
- Integral Proteins
- Peripheral Proteins
External links
- Medical encyclopedia article on Cytoplasmic membrane
- Wikipedia's article - Cytoplasmic membrane
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