Which of the following is not correct with respect to human kidney?

Options

A. The peripheral region is called cortex and central medulla
B. Malpighian corpuscles are present in the cortex region
C. Blood leaves glomerulus through efferent venules
D. The concave part of kidney is called hilus

Answer

To determine which statement is not correct with respect to the human kidney, we will analyze each statement provided.

### Step-by-Step Solution:

1. **Understanding the Structure of the Kidney**:
- The human kidney has two main regions: the outer region known as the **cortex** and the inner region known as the **medulla**.
- **Statement 1**: "The peripheral region is called cortex and the central is medulla."
- This statement is **correct**.

2. **Location of Nephrons**:
- The nephron is the functional unit of the kidney, and the **Malpighian capsules** (or Bowman's capsules) are indeed located in the cortex region.
- **Statement 2**: "The Malpighian capsules are present in the cortex region."
- This statement is also **correct**.

3. **Blood Flow in the Kidney**:
- Blood enters the glomerulus through the **afferent arterioles** and leaves through the **efferent arterioles**.
- **Statement 3**: "Blood leaves the glomerulus through the efferent venules."
- This statement is **incorrect** because blood leaves the glomerulus through the **efferent arterioles**, not venules.

4. **Concave Part of the Kidney**:
- The concave part of the kidney is referred to as the **hilum** (or hilus), where structures such as the ureter and renal vein exit.
- **Statement 4**: "The concave part of the kidney is known as the hilus."
- This statement is **correct**.

### Conclusion:
Based on the analysis, the statement that is not correct with respect to the human kidney is **Statement 3**: "Blood leaves the glomerulus through the efferent venules."

### Final Answer:
**Option 3** is the incorrect statement.

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