Question

Outer Covering of the testes is:

• A. Tunica albuginea
• B. Tunica vaginalis
• C. Tunica media
• D. Tunica vasculosa

Answer 1

The Correct Option is B

Step 1: Understanding the Concept.
The testis is wrapped in several distinct layers, and the question asks specifically for the one that forms its outer surface.

Step 2: Key Approach.
Trace the layers from outside to inside: outer serous sac, then fibrous capsule, then the inner vascular layer, and rule out anything that belongs to a different organ system.

Step 3: Detailed Explanation.
During fetal development, the testis descends from the abdomen into the scrotum, carrying a pouch of peritoneum with it, and this pouch becomes the tunica vaginalis that covers the front and sides of the testis.
Just beneath this outer sac is the tunica albuginea, a dense fibrous capsule that gives the testis its shape and firmness.
Deeper still, lining the inside of the tunica albuginea, is the tunica vasculosa, a network of small blood vessels supplying the testicular tissue.
Tunica media is a term used for blood vessel walls, so it has no place in this list of testicular coverings.

Step 4: Final Answer.
The outer covering of the testes is the tunica vaginalis.