The non-myelinated neurons can be located in

Options

A. CNS and somatic nervous system
B. CNS and autonomous nervous system
C. CNS only
D. Autonomous and somatic neural system

Answer

To solve the question regarding the location of non-myelinated neurons, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Non-myelinated Neurons**:
- Non-myelinated neurons are those that lack a myelin sheath. The myelin sheath is a protective covering that surrounds the axons of many neurons, facilitating faster transmission of electrical impulses.

2. **Identify Nervous Systems**:
- The nervous system can be broadly divided into two main parts: the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The PNS can further be divided into the Somatic Nervous System (SNS) and the Autonomic Nervous System (ANS).

3. **Determine Where Myelin Sheath is Present**:
- In the CNS, myelin sheaths are present, formed by glial cells (specifically oligodendrocytes).
- In the PNS, myelin sheaths are formed by Schwann cells.

4. **Identify Non-myelinated Neurons**:
- Non-myelinated neurons are primarily found in the Autonomic Nervous System (ANS) and the Somatic Nervous System (SNS). These systems contain both myelinated and non-myelinated fibers, but the question specifically asks about the presence of non-myelinated neurons.

5. **Evaluate the Options**:
- **Option 1**: CNS and Somatic Nervous System - Incorrect, as CNS has myelinated neurons.
- **Option 2**: CNS and Autonomic Nervous System - Incorrect, as CNS has myelinated neurons.
- **Option 3**: CNS only - Incorrect, as CNS has myelinated neurons.
- **Option 4**: Autonomic Nervous System and Somatic Nervous System - Correct, as both systems contain non-myelinated neurons.

### Final Answer:
The non-myelinated neurons can be located in the **Autonomic Nervous System and Somatic Nervous System**.