Which one of the following is correct?

Options

A. Lymph = Plasma + RBC + WBC
B. Blood = Plasma + RBC + WBC + Platelets
C. Plasma = Blood - Lymphocytes
D. Serum = Blood + Fibrinogen

Answer

To determine which statement is correct, let's analyze each option step by step.

1. **First Statement**: "In lymph, plasma, RBC and WBC are present."
- **Analysis**: Lymph is a fluid that is similar to plasma but does not contain red blood cells (RBCs). It does contain white blood cells (WBCs), but since RBCs are absent, this statement is incorrect.

2. **Second Statement**: "In blood, plasma, RBC, WBC, platelets are present."
- **Analysis**: Blood is composed of plasma, red blood cells (RBCs), white blood cells (WBCs), and platelets. This statement accurately describes the components of blood, making it correct.

3. **Third Statement**: "In plasma, blood minus lymphocytes are present."
- **Analysis**: Plasma is the liquid component of blood that contains water, electrolytes, proteins, and other substances. It does not exclude lymphocytes specifically. This statement is incorrect.

4. **Fourth Statement**: "Serum, blood plus fibrinogen."
- **Analysis**: Serum is actually the liquid that remains after blood has clotted, meaning it is plasma minus clotting factors (including fibrinogen). Therefore, this statement is also incorrect.

**Conclusion**: The correct statement is the second one: "In blood, plasma, RBC, WBC, platelets are present."

**Final Answer**: The correct option is the second statement.

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