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单词 Intravascular fluid
释义

Intravascular fluid

英语百科

Blood plasma

A unit of donated frozen plasma
Private Roy W. Humphrey is being given blood plasma after he was wounded by shrapnel in Sicily in August, 1943.
Dried plasma packages used by the British and US militaries during WWII

Blood plasma is the pale straw (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, HCO3, 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.

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