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. Glomerulus alongwith 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.

Answer

To determine which statement is incorrect regarding the anatomy of the kidney, we will analyze each provided statement step by step.

### Step 1: Analyze the Statements
1. **Statement 1**: The medullary zone of the kidney is divided into few conical masses called medullary pyramids projecting into the calyces.
- This statement is **correct**. The medullary zone indeed consists of conical structures known as medullary pyramids, which project into the calyces.

2. **Statement 2**: Inside the kidney, the cortical region extends between the medullary pyramids as renal pelvis.
- This statement is **incorrect**. The renal pelvis is not formed by the cortical region extending between the medullary pyramids. Instead, the renal columns (or columns of Bertini) are the extensions of the cortex that separate the medullary pyramids. The renal pelvis is a separate structure that collects urine from the calyces.

3. **Statement 3**: Glomerulus along with Bowman's capsule is called renal corpuscle.
- This statement is **correct**. The glomerulus and Bowman's capsule together form the renal corpuscle, which is a key component of the nephron.

4. **Statement 4**: Renal corpuscle, proximal convoluted tubule, and distal convoluted tubule of the nephron are situated in the cortical region of the kidney.
- This statement is **correct**. All these structures are located in the renal cortex.

### Step 2: Identify the Incorrect Statement
From the analysis, we can see that **Statement 2** is incorrect. The renal pelvis does not extend from the cortical region between the medullary pyramids; rather, it is a distinct structure that collects urine.

### Conclusion
The incorrect statement is **Option B**: "Inside the kidney, the cortical region extends between the medullary pyramids as renal pelvis."

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