Semififerous tubules open into

Options

A. Epididymis
B. Vesa efferentia
C. Vasa deferntia
D. Rete testis.

Answer

To solve the question "Seminiferous tubules open into," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure**: Understand that seminiferous tubules are located in the testes, which are the primary male reproductive organs.

2. **Understand the Pathway**: Recognize that the seminiferous tubules are responsible for the production of sperm. After sperm is produced, it needs to move to other structures for maturation and transport.

3. **Trace the Flow**: The seminiferous tubules do not directly lead to the epididymis. Instead, they first connect to a structure called the rete testis.

4. **Identify the Next Structure**: From the rete testis, the sperm then moves into the vasa efferentia. The vasa efferentia are small ducts that carry sperm from the rete testis to the epididymis.

5. **Final Pathway**: The epididymis is where sperm mature and are stored before being transported through the vas deferens.

6. **Conclusion**: Based on this pathway, we can conclude that the seminiferous tubules open into the rete testis.

### Final Answer:
The seminiferous tubules open into **D. rete testis**.

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