Question

Outer covering of the testes is:

• A. \( \text{Tunica albuginea} \)
• B. \( \text{Tunica vaginalis} \)
• C. \( \text{Tunica media} \)
• D. \( \text{Tunica vasculosa} \)

Hint:

The testes are surrounded by three layers: 1. Tunica vaginalis: Outermost protective layer. 2. Tunica albuginea: Provides structural support. 3. Tunica vasculosa: Supplies blood to the testes. Understanding these layers is crucial in diagnosing testicular pathologies.

Answer 1

The Correct Option is B

Step 1: Anatomy of the testes. The testes are covered by multiple layers for protection and structural integrity: 1. Tunica vaginalis: The outermost layer derived from the peritoneum. 2. Tunica albuginea: A dense fibrous layer beneath the tunica vaginalis, providing support. 3. Tunica vasculosa: The innermost vascular layer. 
Step 2: Explanation of tunica vaginalis. The tunica vaginalis is a double-layered serous membrane covering the testes. It reduces friction and provides protection during movement. 
Step 3: Comparison with other options. - Option \( (A) \): Tunica albuginea is a fibrous layer located beneath the tunica vaginalis. - Option \( (C) \): Tunica media is not related to the testes; it refers to a layer in blood vessels. - Option \( (D) \): Tunica vasculosa is the innermost vascular layer of the testes. 
Conclusion: The outer covering of the testes is \( (B) \ \text{Tunica vaginalis} \).