Read the following statements for testis and choose incorrect one.

Options

A. Each testis has about 250 compartments called testicular lobules
B. Each testicular lobule contains one to three straight seminiferous tubules
C. Each seminiferous tubule is lined on its inside by two type of cells called spermatogonia and sertoli cells.
D. Each testis is covered by a dense covering.

Answer

To solve the question regarding the incorrect statement about the testis, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Testis**:
- The testis is the male gonad responsible for producing sperm and sex hormones. It is located in a sac-like structure called the scrotum, which is external to the abdomen.

2. **Identify the Number of Compartments**:
- Each testis contains approximately 250 compartments known as testicular lobules. This statement is correct.

3. **Examine the Structure of Testicular Lobules**:
- Each testicular lobule contains 1 to 3 seminiferous tubules. However, the statement refers to these tubules as "straight," which is incorrect because seminiferous tubules are actually coiled. Therefore, this statement is incorrect.

4. **Review the Lining of Seminiferous Tubules**:
- Each seminiferous tubule is lined with two types of cells: spermatogonia (sperm mother cells) and Sertoli cells (nurse cells that provide nourishment to sperm). This statement is correct.

5. **Check the Covering of Testis**:
- The testis is covered by a dense layer known as the tunica albuginea, which is made of fibrous tissue. This statement is also correct.

6. **Conclusion**:
- The only incorrect statement among the options provided is the one that describes the seminiferous tubules as "straight" instead of "coiled."

### Final Answer:
The incorrect statement is: "Each testicular lobule contains 1 to 3 straight seminiferous tubules."

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