The epidural space is located between the ______ and the ______.

• A. dura mater; vertebral wall
• B. arachnoid mater; pia mater
• C. pia mater; spinal cord
• D. dura mater; arachnoid mater

Answer: (A)

Verified step by step guidance

1. Understand the anatomy of the meninges and their relationship to the spinal cord. The meninges are protective layers surrounding the brain and spinal cord, consisting of three layers: dura mater (outermost), arachnoid mater (middle), and pia mater (innermost).
2. Learn the location of the epidural space. The epidural space is a fat-filled area that lies outside the dura mater but inside the vertebral wall. It provides cushioning and protection for the spinal cord.
3. Eliminate incorrect options based on anatomical relationships: The arachnoid mater and pia mater are located deeper within the meninges and do not border the epidural space. Similarly, the pia mater and spinal cord are internal structures and are not relevant to the epidural space.
4. Focus on the correct anatomical boundaries: The epidural space is specifically located between the dura mater (outermost meningeal layer) and the vertebral wall (bony structure surrounding the spinal cord).
5. Select the correct answer: dura mater; vertebral wall, as this matches the anatomical description of the epidural space.