Which of the following structures is responsible for protecting the spinal cord and consists of three layers called the dura mater, arachnoid mater, and pia mater?

• A. Spinal meninges
• B. Vertebral body
• C. Spinal nerve
• D. Intervertebral disc

Answer: (A)

Verified step by step guidance

1. Step 1: Begin by understanding the anatomy of the spinal cord and its protective structures. The spinal cord is a vital part of the central nervous system, and it requires protection from physical damage and infections.
2. Step 2: Learn about the spinal meninges, which are the three protective layers surrounding the spinal cord. These layers are the dura mater (outermost layer), arachnoid mater (middle layer), and pia mater (innermost layer). Together, they provide structural support and protection.
3. Step 3: Compare the spinal meninges to the other options provided in the question. The vertebral body is part of the vertebrae that encases the spinal cord but is not composed of the three layers mentioned. Spinal nerves are peripheral nerves that branch off the spinal cord, and intervertebral discs are cartilage structures between vertebrae that provide cushioning.
4. Step 4: Recognize that the spinal meninges are the only structure in the options that consist of the three layers: dura mater, arachnoid mater, and pia mater. This makes them the correct answer.
5. Step 5: Conclude that the spinal meninges are responsible for protecting the spinal cord and consist of the three layers mentioned in the question.