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

Options

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

Explanation

To determine which statement is not correct with respect to the human kidney, let's analyze the provided statements step by step.

### Step-by-Step Solution:

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

2. **Malfegian Corpuscles**:
- Malfegian corpuscles, also known as renal corpuscles, are structures in the nephron that consist of the glomerulus and Bowman's capsule.
- These corpuscles are located in the **cortical region** of the kidney. Therefore, the statement that Malfegian corpuscles are present in the cortical region is **correct**.

3. **Blood Flow in the Glomerulus**:
- Blood enters the glomerulus through the **afferent arteriole** and exits through the **efferent arteriole**.
- The statement that blood enters the glomerulus through the efferent arteriole is **not correct**. This is the incorrect statement we are looking for.

4. **Concave Part of the Kidney**:
- The concave part of the kidney is known as the **hilum** (not helix). This is where the ureter, renal arteries, and veins exit the kidney.
- However, the term "helix" seems to be a misstatement, but it does not affect the correctness of the other statements.

### Conclusion:
The statement that is not correct with respect to the human kidney is that "the blood enters the glomerulus through the efferent arteriole." The correct entry is through the afferent arteriole.

### Final Answer:
The third statement is not correct.

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