The lowest most part of the spinal cord upto which, the nervous part extend:

Options

A. Epidural space
B. Conus medularis
C. Cauds equina
D. Central canal

Answer

To answer the question about the lowest most part of the spinal cord up to which the nerve part extends, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Spinal Cord**:
- The spinal cord is a cylindrical structure that extends from the base of the brain down to the lower back. It is protected by the vertebral column and is surrounded by protective membranes.

2. **Identify the Options**:
- The question provides four options:
- A) Epidural space
- B) Conus medullaris
- C) Cauda equina
- D) Central canal

3. **Evaluate Each Option**:
- **A) Epidural space**: This is the space between the dura mater and the vertebral wall. It does not refer to a part of the spinal cord itself but rather to an area surrounding it. Thus, this option is incorrect.

- **B) Conus medullaris**: This is the tapered end of the spinal cord, which is indeed the lowest part of the spinal cord where the nervous tissue extends. This option is correct.

- **C) Cauda equina**: This term refers to a bundle of spinal nerves and nerve rootlets that extend from the lower end of the spinal cord. It is not a part of the spinal cord itself but rather a collection of nerves. Therefore, this option is incorrect.

- **D) Central canal**: This is a small channel that runs through the center of the spinal cord and is filled with cerebrospinal fluid. It does not represent the lowest part of the spinal cord. Thus, this option is also incorrect.

4. **Conclusion**:
- After evaluating all the options, the correct answer is **B) Conus medullaris**, as it is the lowest most part of the spinal cord up to which the nervous part extends.

### Final Answer:
The lowest most part of the spinal cord up to which the nerve part extends is the **Conus medullaris**.

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