Which is a function of parasympathetic nervous system ?

Answer

**Step-by-Step Solution:**

1. **Understanding the Parasympathetic Nervous System**: The parasympathetic nervous system is one of the two main divisions of the autonomic nervous system, the other being the sympathetic nervous system. It primarily functions to conserve energy and promote a "rest and digest" state.

2. **Identifying Key Functions**: The parasympathetic nervous system is responsible for several key functions that occur when the body is at rest. These include:
- **Digestion**: It stimulates the digestive processes, promoting the breakdown of food and absorption of nutrients.
- **Activation of Metabolism**: It helps in the metabolic processes that occur during rest, facilitating energy storage and utilization.
- **Relaxation**: It aids in calming the body and reducing stress levels.
- **Increased Salivation**: It enhances the production of saliva, which is important for digestion.
- **Urination**: It promotes urination by relaxing the bladder and stimulating bladder contractions.

3. **Conclusion**: The main functions of the parasympathetic nervous system include digestion, activation of metabolism, relaxation, increased salivation, and urination. These functions are crucial for maintaining homeostasis and supporting bodily functions during restful states.

**Final Answer**: The functions of the parasympathetic nervous system include digestion, activation of metabolism, relaxation, increased salivation, and urination.

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