The anatomical space located between the dura mater and arachnoid mater is termed:

The anatomical space located between the dura mater and arachnoid mater is termed:

• A. Epidural
• B. Subarachnoid
• C. Intrathecal
• D. Subdural

Answer: (D)

The space between the dura mater and arachnoid mater is called the subdural space. It’s a potential space that normally isn’t present, but can become an actual space when the layers separate, such as after trauma, where blood or fluid can collect here (subdural hematoma). In contrast, the epidural space lies outside the dura, the subarachnoid space lies between the arachnoid and pia and contains cerebrospinal fluid, and intrathecal refers to injections or procedures into the CSF within the thecal sac.

The space between the dura mater and arachnoid mater is called the subdural space. It’s a potential space that normally isn’t present, but can become an actual space when the layers separate, such as after trauma, where blood or fluid can collect here (subdural hematoma). In contrast, the epidural space lies outside the dura, the subarachnoid space lies between the arachnoid and pia and contains cerebrospinal fluid, and intrathecal refers to injections or procedures into the CSF within the thecal sac.