Secretions of all these glands constitute the seminal plasma except :-

Options

A. Bulbourethral gland
B. Prostate gland
C. Seminal vesicle
D. Bartholin gland

Answer

To solve the question regarding which gland's secretions do not constitute seminal plasma, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Seminal Plasma**: Seminal plasma is the fluid part of semen, which is composed of secretions from male accessory glands and sperm from the seminiferous tubules.

2. **Identify the Glands Involved**: The primary glands that contribute to seminal plasma are:
- **Seminal Vesicles**: These are the largest glands and contribute approximately 60% of the seminal plasma.
- **Prostate Gland**: This gland is single and contributes to the secretions of semen.
- **Bulbourethral Glands (Cowper's Glands)**: These are the smallest glands that secrete mucus for lubrication.

3. **Review the Options**: The question asks which gland does not contribute to seminal plasma. The glands listed typically include the seminal vesicles, prostate, bulbourethral glands, and potentially other glands.

4. **Identify the Incorrect Gland**: The **Bartholin's gland** is mentioned as an option. This gland is located in the female reproductive system and is not involved in the production of seminal plasma.

5. **Conclusion**: Therefore, the gland that does not contribute to seminal plasma is the **Bartholin's gland**.

### Final Answer:
The secretions of all these glands constitute the seminal plasma except the **Bartholin's gland**.

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