Positive-displacement pump

pump (pump)

1. an apparatus for drawing or forcing liquids or gases.

2. to draw or force liquids or gases.

breast pump a manual or electric pump for abstracting breast milk.

calcium pump the mechanism of active transport of calcium (Ca2+) across a membrane, as of the sarcoplasmic reticulum of muscle cells, against a concentration gradient; the mechanism is driven by enzymatic hydrolysis of ATP.

intra-aortic balloon pump (IABP) a pump used in intra-aortic balloon counterpulsation.

proton pump a system for transporting protons across cell membranes, often exchanging them for other positively charged ions.

sodium pump , sodium-potassium pump the mechanism of active transport, driven by hydrolysis of ATP, by which sodium (Na+) is extruded from a cell and potassium (K+) is brought in, so as to maintain gradients of these ions across the cell membrane.

pump (p

mp)

1. A machine or device for raising, compressing, or transferring fluids.

2. A molecular mechanism for the active transport of ions or molecules across a cell membrane.

1. To raise or cause to flow by means of a pump.

2. To transport ions or molecules against a concentration gradient by the expenditure of chemically stored energy.

pump

Etymology: ME, pumpe

1 n, an apparatus used to move fluids or gases by suction or positive pressure, such as an infusion pump or stomach pump.

2 n, a physiologic mechanism by which a substance is moved, usually by active transport across a cell membrane, such as a sodium-potassium pump.

3 v, to move a liquid or gas by suction or positive pressure.

Pump

Physiology A cell membrane-bound ion channel that maintains a gradient between one side and the other of H+, Cl-, etc.
Sports medicine Body-building A muscle that is well larger than normal, a result of aggressive exercise; pumped muscles have greater definition and the vessels are squeezed to the surface
Therapeutics A device used to deliver a precise amount of medication at a specific rate
Vox populi A device, structure or other artifice that causes a fluid or specific molecules to flow in a designated direction

pump [pump]

1. an apparatus for drawing or forcing liquid or gas.

2. to draw or force liquids or gases.

blood pump a machine used to propel blood through the tubing of extracorporeal circulation devices.

breast pump a pump for taking milk from the breast.

calcium pump the mechanism of active transport of calcium (Ca²⁺) across a membrane, as of the sarcoplasmic reticulum of muscle cells, against a concentration gradient; the mechanism is driven by hydrolysis of ATP.

enteral feeding pump an infusion pump specifically designed for administration of a solution through a feeding tube.

insulin pump see insulin pump.

intra-aortic balloon pump see intra-aortic balloon pump.

muscle pump compression of veins by the contraction of skeletal muscles, forcing blood towards the heart against the flow of gravity; seen particularly in the deep veins of the lower limbs. Called also venous pump.

Na⁺-K⁺ pump sodium-potassium pump.

proton pump a system for transporting protons across cell membranes, often exchanging them for other positively charged ions.

sodium pump (sodium-potassium pump) the mechanism of active transport driven by the energy generated by Na⁺,K⁺-ATPase, by which sodium (Na⁺) is extruded from a cell and potassium (K⁺) is brought in, so as to maintain the low concentration of sodium and the high concentration of potassium within the cell with respect to the surrounding medium. A high concentration of intracellular potassium is necessary for vital processes such as protein biosynthesis, certain enzyme activities, and maintenance of the membrane potential of excitable cells. Called also Na⁺-K⁺ pump.

stomach pump see stomach pump.

venous pump muscle pump.

pump

1. an apparatus for drawing or forcing liquid or gas.

2. to draw or force liquids or gases.

3. a mechanism or structure that mediates active transport of ions or molecules across a biological membrane.

blood pump

a machine used to propel blood through the tubing of extracorporeal circulation devices.

calcium pump

the mechanism of active transport of calcium (Ca²⁺) across a membrane, as of the sarcoplasmic reticulum of muscle cells, against a concentration gradient; the mechanism is driven by hydrolysis of ATP.

infusion pump

an electronic device used to control the administration of intravenous fluids in very small amounts and at a carefully regulated rate over long periods.

pump oxygenator

heart-lung machine. See extracorporeal circulatory support unit.

sodium pump, sodium-potassium pump

the mechanism of active transport driven by hydrolysis of ATP, by which sodium (Na+) is extruded from a cell and potassium (K+) is brought in, so as to maintain the low concentration of Na+ and the high concentration of K+ within the cell with respect to the surrounding medium. See also na+,k+-atpase.

stomach pump

an apparatus used to remove material from the stomach. It consists of a rubber stomach tube to which a bulb syringe is attached. The tube is inserted into the mouth or nose and passed down the esophagus into the stomach. Suction from the syringe brings the contents of the stomach up through the tube. For cattle and horses a reversible metal pump adapted from a yachting bilge pump is most suitable. In small animals, gravity is the usual method of moving fluid into and out of the stomach during lavage.

pump

Therapeutics A device used to deliver a precise amount of medication at a specific rate. See Implantable pump, Implantable insulin pump, Infusion pump, Insulin pump Vox populi A device, structure or other artifice that causes a fluid or specific molecules to flow in a designated direction. See Breast pump, Colleague 3 infusion pump, Intra-aortic balloon pump, Lymphatic pump, Mechanical infusion pump, Proton pump.

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Abbott pump blood pump breast pump calcium pump gastric acid pump inhibitor Harvard pump heart-lung machine IABP infusion pump insulin pump intra-aortic balloon pump intravenous controller intravenous peristaltic pump intravenous piston pump intravenous pump IVAC pump Lindbergh pump lymphatic pump Penile Prostheses			The C-series eccentric disc pump is an energy efficient, positive-displacement pump that can be utilized throughout a number of liquid-handling aspects of paint and coatings manufacturing, most notably the movement of resins, solvents, additives, caustics, solids and byproduct waste. Blackmer offers C-series disc pump for paint applications by Coatings World is a positive-displacement pump for open and closed-mold processes that reportedly delivers [+ or -] 0. New resin/catalyst pump reduces flow variation by Plastics Technology A positive-displacement pump delivers liquid additive to a nozzle, which sprays the additive over the solids as they pass through the cascade chamber just above the extruder throat. Gravimetric blender adds liquids by Plastics Technology			positive balance positive convergence positive declination positive electron positive end-expiratory pressure positive feedback positive identification positive inotropic agent positive interactions positive mask Positive Most-Significant-Other positive motivation positive predictive value positive pressure positive pressure breathing unit positive pressure ventilation positive reinforcement positive relationship Positive Samsonite Sign positive scotoma positive sequence positive signs of pregnancy positive stain positive symptom Positive symptoms Positive-displacement pump positive-negative pressure breathing positivism positron positron emission tomography Positron Emission Tomography (PET) Positron emission tomography scan Posner-Schlossman syndrome posological posology possession possum post post cibum post exposure prophylaxis post mortem post oak post partum Post traumatic stress disorder post- post-absorptive state post-anesthetic post-antibiotic effect (PAE) Post-Code Lottery Post-Concussion Syndrome post-dipping lameness			positive very large move positive vetting positive vetting Positive Vibrations Youth Steel Orchestra Positive Vision Network Positive volume index Positive volume index Positive volume index Positive Vorticity Advection positive with respect to a signed measure Positive Women Leaders of Uganda Positive Women of Hope Organization Positive Word-of-Mouth Positive Work Environment Positive yield curve Positive Yield Curves Positive youth development Positive Youth Initiative positive zero Positive, Proactive, Organized, Flexible and Focused Positive-Channel Metal Oxide Semiconductor Positive-channel, Negative-channel junction Positive-Definite Toeplitz Matrix positive-displacement positive-displacement compressor Positive-Displacement Hydraulic Drive positive-displacement meter Positive-displacement pump Positive-Electrolyte-Negative Positive-End Airway Pressure Positive-Going Transition positive-grid oscillator Positive-Intrinsic-Negative Positive-Ion Chemical Ionization positive-ion sheath positive-negative pressure breathing Positive-Negative-Positive Positive-Negative-Positive-Negative positive-phase-sequence relay Positive-Pressure Mechanical Ventilation Positive-Referenced Emitter Coupled Logic Positive-sense RNA Positive-sense RNA Positive-sense RNA Positive-sense ssRNA virus Positive-sense ssRNA virus Positive-sense virus Positive-sense virus Positive-Youth Foundation Positive/Negative positively positively positively positively positively positively charged Positively Charged Dextran Resin positively declared

pump (redirected from Positive-displacement pump)

pump
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