Question

Which of the following is correct for rete testis?
(A). It is present in mediastinum testis.
(B). It produces testicular fluid.
(C). It consists of irregular anastmosing canals surrounded by loose connective tissue.
(D). It consists of irregular anastmosing canals surrounded by dense connective tissue.
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A) and (C) only.
• D. (A) and (D) only.

Hint:

Remember that the mediastinum is a central supporting "core" of the testis, and like the outer tunica albuginea, it must be robust.
Therefore, it is composed of dense connective tissue, which surrounds the rete testis canals.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
The rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle (mediastinum testis) that carries sperm from the seminiferous tubules to the efferent ductules.

Step 2: Detailed Explanation:
Let us analyze each statement:
(A) The mediastinum testis is a connective tissue core in the center of the testis. In domestic mammals (especially well-developed in ruminants, pigs, and dogs), the rete testis is located within this mediastinum. (True)
(B) The testicular fluid is primarily secreted by the Sertoli cells within the seminiferous tubules. The rete testis simply acts as a conduit for fluid and spermatozoa and does not produce significant amounts of testicular fluid. (False)
(C) and (D) The mediastinum testis is composed of dense irregular connective tissue (fibrous tissue) that is continuous with the tunica albuginea.
Therefore, the irregular, anastomosing epithelial-lined channels of the rete testis are embedded within and surrounded by this dense connective tissue, not loose connective tissue.
Thus, statement (D) is correct and statement (C) is incorrect.
Combining the correct statements, we have (A) and (D) only.

Step 3: Final Answer:
This corresponds to option (D).