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Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Blood plasma is a yellowish 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 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 , carbon dioxide ( plasma being the main medium for excretory product transportation ) and oxygen . 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 .
Output:
Blood plasma