The urethra passes through the _______ of the penis .

Options

A. tunica albuginea
B. prepuce
C. corpus spongiosum
D. corpora cavernosa

Answer

The urethra passes through the **corpus spongiosum** of the penis.

### Step-by-Step Solution:

1. **Understanding the Urethra's Function**: The urethra is a tube that carries urine from the bladder to the outside of the body. In males, it also serves as a passage for semen during ejaculation.

2. **Identifying the Structures of the Penis**: The penis is composed of several structures, including:
- **Tunica Albuginea**: A fibrous tissue that surrounds the corpora cavernosa.
- **Prepuce**: Also known as the foreskin, it covers the glans of the penis.
- **Corpus Cavernosum**: Two cylindrical structures that run along the length of the penis and fill with blood during an erection.
- **Corpus Spongiosum**: A single cylindrical structure that surrounds the urethra and extends to form the glans of the penis.

3. **Locating the Urethra**: The urethra runs through the penis and is specifically surrounded by the corpus spongiosum. This structure ensures that the urethra remains open during erection, allowing for the passage of urine and semen.

4. **Conclusion**: Based on the anatomical relationships, the urethra passes through the **corpus spongiosum** of the penis.