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breast pump |
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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.
breast pump, a mechanical or electronic device for withdrawing milk from the breast. Breast Pump A tubular mechanical device that provides gentle suction for milk extraction, used when breasts are engorged or when direct infant feeding is not possible for various physical—e.g., prematurity—or logistical reasons 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.
breast pump Pediatrics A tubular mechanical device that provides gentle suction for milk extraction, used when breasts are engorged or when direct infant feeding is not possible for various physical–eg prematurity or logistic–eg
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