Read the following statements: Statement A: ultra filtration of blood occurs in renal corpuscles.Statement B:during ultrafiltration, almost all the constituents of blood plasma except the proteins pass into the lumen of Bowman's capsule.

Options

A. statement A is incorrect and B is correct
B. statement A is correct and B is incorrect
C. Both statement A and B is incorrect
D. Both statement A and B is correct

Answer

To analyze the statements provided in the question, we will evaluate each statement step by step.

### Step-by-Step Solution:

1. **Understanding Statement A**:
- Statement A claims that "ultrafiltration of blood occurs in renal corpuscles."
- The renal corpuscle is a part of the nephron in the kidney, which includes the glomerulus and Bowman's capsule.
- Ultrafiltration is indeed a process that occurs in the renal corpuscles, where blood is filtered to form urine.

**Conclusion for Statement A**: This statement is **correct**.

**Hint**: Remember that the renal corpuscle is the site of blood filtration in the kidney.

2. **Understanding Statement B**:
- Statement B states that "during ultrafiltration, almost all constituents of blood plasma except the proteins pass into the lumen of Bowman's capsule."
- During ultrafiltration, blood plasma is filtered through the glomerular capillaries.
- The filtration barrier allows water, ions, and small molecules to pass while preventing larger molecules such as proteins and blood cells from entering Bowman's capsule.

**Conclusion for Statement B**: This statement is also **correct**.

**Hint**: Think about the size of molecules and what can pass through the filtration barrier in the kidneys.

3. **Final Evaluation**:
- Both statements A and B have been evaluated and found to be correct.
- Therefore, the answer to the question is that both statements are true.

### Final Answer:
Both Statement A and Statement B are correct.