extracellular
Học thuậtThân thiện
Definition
Adjective: - Located or occurring outside a cell or cells: Describes anything that exists, is found, or happens in the space surrounding cells, not within their boundaries.
Usage
The adjective "extracellular" is primarily used in scientific contexts, especially biology, biochemistry, and medicine. It modifies nouns to specify that the described entity is external to cells. - It typically precedes the noun it describes (e.g., extracellular space, extracellular matrix). - It is the opposite of "intracellular" (located inside a cell).
Examples
- Scientific Description:
- The extracellular fluid bathes the cells and provides them with nutrients.
- Researchers are studying the role of extracellular vesicles in cell communication.
- Defining a Structure:
- Collagen is a major component of the extracellular matrix in animal tissues.
- The bacterium secretes enzymes into the extracellular environment.
Advanced Usage
- "extracellularly" (adverb): In a manner that occurs outside a cell.
- The signal is processed extracellularly before it affects the target cell.
Variants and Related Words
- Extracellular Matrix (ECM): A complex network of proteins and carbohydrates secreted by cells, providing structural and biochemical support.
- Extracellular Fluid (ECF): All body fluid outside of cells, including interstitial fluid and plasma.
- Extracellular Space: The area outside of cells within a tissue or organism.
Synonyms
- External to the cell: A descriptive phrase with the same meaning.
- Intercellular: While sometimes used loosely as a synonym, "intercellular" more strictly means , which is a subset of the extracellular space.
Antonyms
- Intracellular: Located or occurring inside a cell or cells.
- Mitochondria are intracellular organelles.
Adjective
- located or occurring outside a cell or cells
- extracellular fluid