75% osmotic pressure of blood is maintained by:
Correct answer: D. Albumin
- A. Globulin
- B. Prothrombin
- C. Fibrinogen
- D. Albumin
Explanation
Serum albumin is a protein found in blood plasma that helps maintain the osmotic pressure between the blood vessels and tissues. Circulating blood tends to force fluid out of the blood vessels and into the tissues, where it results in edema (swelling from excess fluid). During injury, Prothrombin is converted into Thrombin which in turn acts as a serine protease that converts soluble fibrinogen into insoluble strands of fibrin, as well as catalyzing many other coagulation-related reactions. During tissue and vascular injury, Fibrinogen is converted enzymatically by thrombin to fibrin and then to a fibrin-based blood clot. Fibrin clots function primarily to occlude blood vessels to stop bleeding.
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