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 the renal pelvis, which forms the columns of Bertini.
C. Glomerulus along with Bowman's capsule is called the renal corpuscle.
D. Renal corpuscles, proximal convoluted tubule (PCT) and distal convoluted tubule (DCT) of the nephron are situated in the cortical region of kidney.

Answer

To solve the question of identifying the incorrect statement regarding the kidney, we will analyze each statement provided in the question step by step.

### Step-by-Step Solution:

1. **Statement 1**: "The medullary zone of kidney is divided into few conical mass called medullary pyramids, projecting into calluses."
- This statement is **correct**. The medullary zone indeed consists of structures known as medullary pyramids, which are conical in shape and project into the renal calyces.

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

3. **Statement 3**: "Glomerulus along with Bowman's capsule is called renal corpuscles."
- 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 corpuscles, proximal convoluted tubule (PCT), and distal convoluted tubule (DCT) of nephron are situated in the cortical region of kidney."
- This statement is **correct**. Both the renal corpuscles and the convoluted tubules (PCT and DCT) are located in the cortical region of the kidney.

### Conclusion:
The incorrect statement is **Statement 2**: "Inside the kidney, the cortical region extends in between medullary pyramids as renal pelvis." This is incorrect because the cortical region is known as the renal cortex, not the renal pelvis.

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