What layer is a serous sac that contains fluid that hugs the surface of the testis? A. Epididymis B. Tunica albuginea C. Rete testis D. Tunica vaginalis

Break Down the Problem

1. Identify the structure described in the question.
2. Evaluate the functions of each option provided.

Relevant Concepts

• Epididymis: A coiled tube where sperm mature and are stored.
• Tunica albuginea: The fibrous covering of the testis providing structure.
• Rete testis: A network of tubes that transport sperm from the seminiferous tubules.
• Tunica vaginalis: A serous membrane that surrounds the testis and contains fluid.

Analysis and Detail

• The question specifies a serous sac that contains fluid.
• The Tunica vaginalis is known to be a serous sac that surrounds the testis and provides lubrication, allowing for movement and reducing friction.

Verify and Summarize

• The roles of each option have been examined, and only the Tunica vaginalis fits the description of a serous sac containing fluid.

Final Answer

D. Tunica vaginalis