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Cellular Regulation
What is Cellular Regulation?
Term | Definition |
---|---|
Diffusion | The movement of solutes from an area of high concentration to an area of low concentration |
Electrolytes | Charged particles found in body fluids |
Extracellular fluid (ECF) | The fluid located between cells and includes interstitial and intravascular fluid |
Hypertonic | A solution with a concentration higher than that of blood |
Hypotonic | A solution with a concentration lower than that of blood |
Interstitial fluid | The fluid located between cells |
Intracellular fluid (ICF) | The fluid located inside each cell |
Intravascular fluid | The fluid located inside the blood vessels, excluding the fluid inside the cells in the blood vessels |
Isotonic | Solution that has the same osmotic pressure as the referent solution (ex plasma) |
Oncotic pressure | Osmotic pressure because of proteins |
Osmolality | The number of solutes per kilogram of fluid |
Osmolarity | The number of solutes per liter of fluid |
Osmosis | The movement of water from an area of low concentration of solutes (low osmolality) to an area of high concentration of solutes (high osmolality) |
Osmotic pressure | The ability of a solution to draw fluid across a semipermeable membrane |
Semipermeable membranes | Separation between two areas that allows movement of some fluids or solutes |
Solutes | Particles contained within the fluid that contributes to the concentration or osmolality of the fluid |
Transcellular fluid | Fluid that is in neither the intracellular nor extracellular space, and includes cerebrospinal fluid, joint fluid, and the fluid within the gastrointestinal tract |