In human, autonomic nervous system is composed of

Options

A. Sympathetic and parasympathetic nerves
B. Cranial and spinal nerves
C. Brain and spinal nerves
D. Medullated and non-medullated nerves

Answer

To answer the question "In humans, the Autonomic Nervous System is composed of?", we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding the Autonomic Nervous System (ANS)**:
- The ANS is a crucial part of the nervous system that regulates involuntary bodily functions, including the activity of internal organs (visceral organs). It operates automatically without conscious control.

2. **Identifying the Components of the ANS**:
- The ANS is primarily divided into two main components:
- **Sympathetic Nervous System**: This part is responsible for the body's 'fight or flight' response. It prepares the body for stressful situations by increasing heart rate, dilating pupils, and inhibiting digestion, among other functions.
- **Parasympathetic Nervous System**: This part promotes the 'rest and digest' response. It conserves energy by slowing the heart rate, increasing intestinal and gland activity, and relaxing sphincter muscles.

3. **Evaluating the Options Provided**:
- **Option 1: Sympathetic and Parasympathetic Nerves**: This is the correct answer as it accurately describes the two main components of the ANS.
- **Option 2: Cranial and Spinal Nerves**: This option is incorrect because cranial and spinal nerves are part of the central nervous system (CNS), not the ANS.
- **Option 3: Brain and Spinal Nerves**: This option is also incorrect as both the brain and spinal nerves are components of the CNS.
- **Option 4: Modulated and Non-modulated Nerves**: This option is incorrect as these terms do not specifically refer to the components of the ANS.

4. **Conclusion**:
- Based on the evaluation of the options, the Autonomic Nervous System in humans is composed of **Sympathetic and Parasympathetic Nerves**.

### Final Answer:
The Autonomic Nervous System in humans is composed of **Sympathetic and Parasympathetic Nerves**.

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