Seminal plasma, the fluid part of semen, is contributed by
(i) seminal vesicle (ii) prostate
(iii) urethra (iv) bulbourethral gland

Options

A. (i) and (ii)
B. `i`,ii and iv
C. ii,iii and iv
D. `i` and iv

Answer

To answer the question regarding which structures contribute to the seminal plasma, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of Semen**:
- Semen, also known as seminal fluid, is an organic fluid that contains spermatozoa (sperm cells) and other components.

2. **Identify the Components of Seminal Plasma**:
- Seminal plasma is the fluid part of semen that provides nutrients and a medium for spermatozoa.

3. **List the Contributing Glands**:
- The seminal plasma is primarily contributed by:
- **Seminal Vesicles**: These glands produce a significant portion of the seminal fluid, including fructose and citric acid, which provide energy for sperm.
- **Prostate Gland**: This gland adds fluids that contain calcium ions and other substances that help in sperm motility and viability.
- **Bulbourethral Gland (Cowper's Gland)**: This gland secretes alkaline mucus that helps to neutralize the acidity of the urethra and provides lubrication.

4. **Evaluate Other Options**:
- The **urethra** does not contribute to the seminal plasma; it is merely a passage through which semen is expelled.

5. **Conclusion**:
- Therefore, the structures that contribute to the seminal plasma are the **seminal vesicles (i)**, **prostate (ii)**, and **bulbourethral gland (iv)**. The correct answer is **(i), (ii), and (iv)**.

### Final Answer:
The seminal plasma is contributed by (i) seminal vesicle, (ii) prostate, and (iv) bulbourethral gland.

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