Which of the following accessory gland is not paired?

Options

A. Seminal vesicle
B. Prostate gland
C. Bulbourethral gland
D. None of these

Answer

To solve the question "Which of the following accessory glands is not paired?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which accessory gland among the options is not paired. Accessory glands in the male reproductive system include seminal vesicles, prostate gland, and bulbourethral glands.

2. **Evaluate the Options**:
- **Option 1: Seminal Vesicles**: These are paired glands. Each male has two seminal vesicles, one on each side of the bladder. Therefore, this option is incorrect.

- **Option 2: Prostate Gland**: The prostate gland is a single gland located below the bladder and surrounds the urethra. It is not paired. Therefore, this option is correct.

- **Option 3: Bulbo-Urethral Glands**: Also known as Cowper's glands, these are paired glands, with one on each side of the urethra. Therefore, this option is incorrect.

- **Option 4: None of These**: This option implies that all previous options are paired, which is incorrect since the prostate gland is not paired.

3. **Conclusion**: Based on the evaluation, the correct answer is **Option 2: Prostate Gland**, as it is the only accessory gland listed that is not paired.

### Final Answer:
The accessory gland that is not paired is the **Prostate Gland**.