Which one of the following statements is incorrect

Options

A. The medullary zone of kidney is divided into a few conical masses called medullary pyramids projecting into the calyces
B. Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis
C. Glomerular along with Bowman's capsule is called the renal corpuscle
D. Renal corpuscle, proximal convoluted tubule (PCT) and distal convoluted tubule (DCT) of the nephron are situated in the cortical region of kidney

Explanation

To determine which statement is incorrect regarding the structure and function of the kidneys, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "The medullary zone of kidneys is divided into few conical masses called medullary pyramids projecting into the calyces."
- **Analysis**: This statement is correct. The medullary zone indeed contains structures known as medullary pyramids, which project into the calyces of the kidney.

2. **Statement 2**: "Inside the kidney, the cortical zone extends in between the medullary pyramids as renal pelvis."
- **Analysis**: This statement is incorrect. The cortical zone does extend between the medullary pyramids, but it is not referred to as the renal pelvis. The renal pelvis is actually a funnel-shaped structure that collects urine from the calyces and leads to the ureter. The areas between the pyramids are known as the Columns of Bertini.

3. **Statement 3**: "Glomerulus along with Bowman's capsule is called the renal corpuscle."
- **Analysis**: This statement is correct. The glomerulus and Bowman's capsule together form the renal corpuscle, also known as the Malpighian body.

4. **Statement 4**: "Renal corpuscle, proximal convoluted tubule, and distal convoluted tubule of the nephron are situated in the cortical zone of the kidney."
- **Analysis**: This statement is correct. The renal corpuscle and the convoluted tubules (proximal and distal) are primarily located in the cortical region of the kidney.

### Conclusion:
After analyzing all the statements, we find that **Statement 2** is incorrect.

### Final Answer:
The incorrect statement is: "Inside the kidney, the cortical zone extends in between the medullary pyramids as renal pelvis."

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