sodium pump
noun Date: 1951 a molecular mechanism by which sodium ions are actively transported across a cell membrane; especially one that is controlled by a specialized plasma membrane protein by which a high concentration of potassium ions and a low concentration of sodium ions are maintained within a cell 2. the specialized plasma membrane protein that controls the sodium pump mechanism

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • sodium pump — n 1) a molecular mechanism by which sodium ions are actively transported across a cell membrane esp one by which a high concentration of potassium ions and a low concentration of sodium ions are maintained within a cell and that is controlled by… …   Medical dictionary

  • sodium pump — noun 1. : a molecular mechanism by which sodium ions are actively transported across a cell membrane ; especially : one by which a high concentration of potassium ions and a low concentration of sodium ions are maintained within a cell and that… …   Useful english dictionary

  • sodium pump — so′dium pump n. phl an energy consuming mechanism in cell membranes that transports sodium ions across the membrane, in exchange for potassium ions or other substances • Etymology: 1960–65 …   From formal English to slang

  • sodium pump — A mechanism of neurones to move sodium ions out of the cell during the recovery phase …   Dictionary of invertebrate zoology

  • sodium pump — See sodium potassium ATPase …   Dictionary of molecular biology

  • sodium pump — an energy consuming mechanism in cell membranes that transports sodium ions across the membrane, in exchange for potassium ions or other substances. [1960 65] * * * …   Universalium

  • sodium pump — noun the transport of sodium ions across biological membranes using the metabolic energy of ATP …   Wiktionary

  • pump — 1. An apparatus for forcing a gas or liquid from or to any part. 2. Any mechanism for using metabolic energy to accomplish active transport of a substance. breast p. a suction instrument for withdra …   Medical dictionary

  • pump — pump1 pumpable, adj. pumpless, adj. pumplike, adj. /pump/, n. 1. an apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes. 2. Engin., Building Trades. a shore …   Universalium

  • sodium — A metallic element, atomic no. 11, atomic wt. 22.989768; an alkali metal oxidizing readily in air or water; its salts are found in natural biologic systems and are extensively used in medicine and industry. The s. ion is the most plentiful… …   Medical dictionary

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