<unk> s, also termed plasma<unk> s, are<unk> s present in blood plasma. They serve many different functions, including transport of lipids, hormones, vitamins and minerals in activity and functioning of the immune system. Other<unk> s act as enzymes, complement components, protease inhibitors or kinin precursors. Contrary to popular belief, haemoglobin is not a<unk> , as it is carried within red blood cells, rather than in the blood serum. Serum albumin accounts for 55% of<unk> s, is a major contributor to maintaining the oncotic pressure of plasma and assists, as a carrier, in the transport of lipids and steroid hormones. Globulins make up 38% of<unk> s and transport ions, hormones, and lipids assisting in immune function. Fibrinogen comprises 7% of<unk> s; conversion of fibrinogen to insoluble fibrin is essential for blood clotting. The remainder of the plasma<unk> s (1%) are regulatory<unk> s, such as enzymes, proenzymes, and hormones. All<unk> s are synthesized in liver except for the gamma globulins.
Blood protein
Lipoprotein
Blood pressure
Electrolyte
Blood gas tension
Blood alcohol content
Breathing gas
Blood volume