Which of the following can lead to infertility in males

Options

A. Any kind of reproductive tract infection like filariasis
B. Undersecretion of hormones like FSH and adrenaline
C. Improper structure of sperm produced in Leydig cells
D. Damaged to accessory duct

Answer

To solve the question "Which of the following can lead to infertility in males?", we will analyze the potential causes of male infertility based on the information provided.

### Step-by-Step Solution:

1. **Understanding Male Infertility**:
- Male infertility is defined as the inability to conceive a child after one year of unprotected sexual intercourse. It often stems from issues related to sperm production, sperm transport, or hormonal imbalances.

2. **Identifying Potential Causes**:
- Various factors can contribute to male infertility, including:
- Cryptorchidism (undescended testes)
- Hormonal imbalances (e.g., deficiencies in gonadotropins like FSH and LH)
- Genetic factors (e.g., Y-chromosomal deletions)
- Infections (e.g., mumps, infections of the seminal vesicles or prostate)
- Autoimmune disorders (where the body produces antibodies against its own sperm)
- Lifestyle factors (e.g., alcohol consumption, long-term use of certain medications)

3. **Analyzing the Options Provided**:
- **Option 1**: Reproductive tract infections like filariasis.
- Filariasis is caused by a parasitic infection and is not classified as a reproductive tract infection. Therefore, this option is incorrect.
- **Option 2**: Under secretion of hormones like FSH and adrenaline.
- FSH is indeed related to sperm production, but adrenaline does not play a direct role in male fertility. This option is also incorrect.
- **Option 3**: Improper structure of sperm produced in the larynx cells.
- Sperm is produced in the seminiferous tubules, not in the larynx. Hence, this option is incorrect.
- **Option 4**: Damage to the accessory duct.
- The accessory ducts (such as the vas deferens) are crucial for transporting sperm. Damage to these ducts can prevent sperm from being delivered to the external genitalia, leading to infertility. This option is correct.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option 4: Damage to the accessory duct**.