Erection of penis occurs due to :-

Options

A. Sympathetic nervous system
B. Parasympathetic nervous system
C. Both (1) and (2)
D. Cerebral cortex `to` ANS `to` vasodilation

Answer

To solve the question "Erection of penis occurs due to:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking about the physiological mechanism behind the erection of the penis.

2. **Identify Key Terms**: Recognize the terms "erection" and "ejaculation" as they are crucial to understanding the physiological processes involved.

3. **Differentiate Between Erection and Ejaculation**:
- Erection is primarily controlled by the **parasympathetic nervous system**.
- Ejaculation is controlled by the **sympathetic nervous system**.

4. **Focus on Erection**: Since the question specifically asks about erection, we need to concentrate on the role of the parasympathetic nervous system.

5. **Conclusion**: Based on the understanding that erection is facilitated by the parasympathetic nervous system, we can conclude that the correct answer is **option 2**.

### Final Answer:
Erection of the penis occurs due to the **parasympathetic nervous system**.

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