Which of the following structure of the female reproductive system can be taken as homologous to the scrotal sac of the male ?

Options

A. Mons pubis
B. Labia majora
C. Bulbourethral gland
D. Forchette

Answer

To determine which structure of the female reproductive system is homologous to the scrotal sac of the male, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Homologous Structures**:
- Homologous structures are those that have a similar origin but may serve different functions in different sexes. In this case, we are looking for a female structure that corresponds to the male scrotal sac.

2. **Identifying the Male Structure**:
- The scrotal sac in males is responsible for holding and protecting the testes, and it plays a role in regulating the temperature necessary for sperm production.

3. **Reviewing Female Reproductive Structures**:
- The options provided are:
- Mons pubis
- Labia majora
- Bulbo urethral gland
- Foreskin (prepuce)

4. **Analyzing Each Option**:
- **Mons pubis**: This is a fatty tissue covering the pubic bone and does not have a direct homologous relationship with the scrotal sac.
- **Labia majora**: These are the outer folds of skin that protect the female genitalia. They are analogous to the scrotal sac as they both are external structures and serve a protective function.
- **Bulbo urethral gland**: This gland is involved in lubrication and does not correspond to the scrotal sac.
- **Foreskin (prepuce)**: This is a fold of skin covering the glans of the penis, not related to the scrotal sac.

5. **Conclusion**:
- The labia majora are the homologous structure to the male scrotal sac, as both serve protective roles for the reproductive organs.

### Final Answer:
The structure of the female reproductive system that can be taken as homologous to the scrotal sac of the male is **Labia majora**.