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Blood colloidal osmotic pressure mainly ...

Blood colloidal osmotic pressure mainly maintained by which plasma protein `:-`

A

Globulin

B

Albumin

C

Fibrinogen

D

Prothombin

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**Step-by-Step Solution:** 1. **Understanding Blood Colloidal Osmotic Pressure**: Blood colloidal osmotic pressure refers to the pressure exerted by proteins in the blood plasma that helps to retain water within the bloodstream. This pressure is crucial for maintaining the balance of fluids between the blood and surrounding tissues. 2. **Role of Plasma Proteins**: Plasma proteins play a significant role in regulating osmotic pressure. They help prevent excessive loss of water from the blood into the tissues, ensuring that the blood volume remains stable. 3. **Identifying Key Plasma Proteins**: Among the various plasma proteins, some are more significant in maintaining osmotic pressure. These include albumin, globulins, and fibrinogen. 4. **Focusing on Albumin**: Albumin is the most abundant plasma protein and is primarily responsible for maintaining the colloidal osmotic pressure in the blood. It has a high capacity to attract water, which helps keep fluid within the blood vessels. 5. **Conclusion**: Therefore, the plasma protein that mainly maintains blood colloidal osmotic pressure is **albumin**. ---
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