Which of the following is located on the base of urinary bladder?

Options

A. Seminal vesicle
B. Prostate glands
C. Bulbourethral gland
D. Ovary

Answer

To determine which structure is located at the base of the urinary bladder, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Anatomy of the Urinary Bladder**: The urinary bladder is a muscular sac that stores urine. It has various anatomical features, including the base, which is the part that connects to other structures.

2. **Identify the Structures Associated with the Urinary Bladder**: The urinary bladder is associated with several glands and organs, particularly in males, such as the seminal vesicles, prostate gland, and bulbourethral glands.

3. **Locate the Seminal Vesicles**: The seminal vesicles are paired glands that are located posterior to the bladder and are known to secrete seminal fluid. They are the largest accessory glands in males.

4. **Consider the Prostate Gland**: The prostate gland is a single gland located below the bladder and surrounds the urethra. It also contributes to seminal fluid but is not located at the base of the bladder.

5. **Evaluate the Bulbourethral Glands**: The bulbourethral glands are smaller paired glands located near the base of the penis and are not associated with the base of the bladder.

6. **Conclusion**: Based on the anatomical positions of these structures, the seminal vesicles are located at the base of the urinary bladder. Therefore, the correct answer to the question is the seminal vesicles.

### Final Answer:
The structure located at the base of the urinary bladder is the **seminal vesicles**.

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