The Collaborative International Dictionary
Plasma \Plas"ma\, n. [See Plasm.]
(Min.) A variety of quartz, of a color between grass green and leek green, which is found associated with common chalcedony. It was much esteemed by the ancients for making engraved ornaments.
(Biol.) The viscous material of an animal or vegetable cell, out of which the various tissues are formed by a process of differentiation; protoplasm.
Unorganized material; elementary matter.
(Med.) A mixture of starch and glycerin, used as a substitute for ointments.
--U. S. Disp.
same as blood plasma.
(physics) a state of matter in which charged particles such as electrons and atomi nuclei have sufficiently high energy to move freely, rather than be bound in atoms as in ordinary matter; it has some of the properties of a gas, but is a conductor of electricity.
Note: In a typical plasma, the number of positive and negative particles are approximately equal. Plasmas are found naturally in the atmosphere of stars, and can be created in special laboratory apparatus.
Blood plasma (Physiol.), the colorless fluid of the blood, in which the red and white blood corpuscles are suspended. It may be obtained by centrifuation of blood to remove the blood cells. It is distinguished from serum in that plasma still has the fibrin of blood, and may be clotted, while in serum the fibrin has been removed.
Muscle plasma (Physiol.), the fundamental part of muscle fibers, a thick, viscid, albuminous fluid contained within the sarcolemma, which on the death of the muscle coagulates to a semisolid mass.
n. (context hematology English) The clear fluid portion of blood in which the red blood cells, white blood cells and platelets are suspended; forms serum upon clotting.
n. plasma that separates from blood in coagulation
Blood plasma is the pale yellow coloured liquid component of blood that normally holds the blood cells in whole blood in suspension; this makes plasma the extracellular matrix of blood cells. It makes up about 55% of the body's total blood volume. It is the intravascular fluid part of extracellular fluid (all body fluid outside of cells). It is mostly water (up to 95% by volume), and contains dissolved proteins (6–8%) (i.e.— serum albumins, globulins, and fibrinogen), glucose, clotting factors, electrolytes (Na, Ca, Mg, HCO, Cl, etc.), hormones, and carbon dioxide (plasma being the main medium for excretory product transportation). Plasma also serves as the protein reserve of the human body. It plays a vital role in an intravascular osmotic effect that keeps electrolytes in balanced form and protects the body from infection and other blood disorders.
Blood plasma is prepared by spinning a tube of fresh blood containing an anticoagulant in a centrifuge until the blood cells fall to the bottom of the tube. The blood plasma is then poured or drawn off. Blood plasma has a density of approximately 1025 kg/m, or 1.025 g/ml.
Blood serum is blood plasma without clotting factors; in other words, "pure" blood. Plasmapheresis is a medical therapy that involves blood plasma extraction, treatment, and reintegration.
It is on the WHO Model List of Essential Medicines, the most important medications needed in a basic health system.
Usage examples of "blood plasma".
If the blood plasma contains antibodies to that antigen, they will bind to it in a reaction that can be made visible by suitable means.
And if he had not died until she had him within the receival tray of a fullsize robo-doc there was a chance the machine had been able to hypo adrenalin into him to get his heart functioning, while it had fed him bottles of blood plasma from a needle.
And then the outer layer of the hull behind him whipped away and he felt a soft thrust that sent him tumbling outward and into the blood plasma within the capillary.
At the end of two hours she had recorded 200 packed tents, 5 tons of blankets, 10 tons of powdered milk, 1,000 yards of bandages, 500 litres of blood plasma, 2,000 litres of saline solution, 60 drums of heating-oil, 500 cheap cooking-stoves, 3 mobile operating theatres, 6 tons of surgical equipment, and 4 tons of medicines, complete with detailed receipts from a reputable Swiss pharmaceutical company, together with all the correct export-licences.
However, much scientific work has been done along these lines, and marvelous progress has been made in the field of blood plasma.
It simply changes the density of your blood plasma slightly, on demand from the air pressure on the outside, or lack of it.