A protective layer arround testis is

Options

A. Tunica albuginea
B. Tunica adventitia
C. Tunica media
D. Tunica vasulosa

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks for the name of the protective layer surrounding the testis.

2. **Identifying the Structure:** The testis is a part of the male reproductive system, responsible for the production of sperm and hormones.

3. **Location of the Testis:** The testis is located outside the abdominal cavity within a pouch of skin called the scrotum. This external location is crucial for temperature regulation necessary for sperm production.

4. **Protective Layer Identification:** The protective layer surrounding the testis is known as the Tunica albuginea. This layer is a fibrous tissue that provides support and protection to the testis.

5. **Differentiating Other Options:** The other options provided (Tunica adventitia, Tunica media, and Tunica vasculosa) are layers associated with blood vessels, not the testis.
- Tunica adventitia is the outer layer of blood vessels.
- Tunica media is the middle layer of blood vessels.
- Tunica vasculosa is the inner layer of blood vessels.

6. **Conclusion:** Based on the information, the correct answer to the question is that the protective layer around the testis is called the Tunica albuginea.

**Final Answer:** The protective layer around the testis is called the Tunica albuginea.

---