A bundle of fibres found outside the central nervous system is known as a :

Options

A. meninx
B. nerve
C. dendrite
D. tract

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to describe a bundle of fibers that is located outside the central nervous system (CNS).

2. **Identifying Key Terms**: The key term here is "bundle of fibers." In the context of the nervous system, these fibers refer to the axons of neurons.

3. **Differentiating Between CNS and PNS**: The central nervous system consists of the brain and spinal cord, while the peripheral nervous system (PNS) includes all the nerves that branch out from the CNS to the rest of the body.

4. **Defining the Term**: In the PNS, a bundle of fibers (axons) is referred to as a "nerve." Nerves can be classified into sensory (afferent) nerves, which carry signals to the CNS, and motor (efferent) nerves, which carry signals away from the CNS to muscles.

5. **Conclusion**: Therefore, the correct answer to the question is that a bundle of fibers found outside the central nervous system is known as a "nerve."

**Final Answer**: A bundle of fibers found outside the central nervous system is known as a **nerve**.

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