Beginner Arachnoid Mater Quiz

Q1. Which meningeal layer lies immediately deep to the dura mater around the spinal cord?

• Endosteum
• Pia mater
• Arachnoid mater
• Periosteum

Q2. Which meningeal layer lies directly deep to the arachnoid mater?

• Posterior longitudinal ligament
• Dura mater
• Ligamentum flavum
• Pia mater

Q3. What space lies between the arachnoid mater and pia mater?

• Epidural space
• Subarachnoid space
• Subdural space
• Intervertebral foramen

Q4. What fluid normally occupies the spinal subarachnoid space?

• Cerebrospinal fluid
• Synovial fluid
• Bile
• Lymph only

Q5. Which structures cross the subarachnoid space between arachnoid and pia?

• Arachnoid trabeculae
• Intervertebral discs
• Ligamenta flava
• Annular ligaments

Q6. At approximately which vertebral level does the spinal dural and arachnoid sac usually end in adults?

• C7
• S2
• T12
• L1

Q7. What is the enlarged subarachnoid space below the end of the spinal cord called?

• Sacral hiatus
• Cervical sinus
• Lumbar cistern
• Epidural cistern

Q8. Which structures are suspended in cerebrospinal fluid within the lumbar cistern?

• Lumbar vertebral bodies
• Spinal cord only without nerve roots
• Thoracic sympathetic trunks
• Cauda equina and filum terminale internum

Q9. Is the arachnoid mater normally closely adherent to the pia mater?

• No, because dura lies between them
• Yes, except inside vertebral bodies
• No, they are separated by the subarachnoid space
• Yes, they are fused throughout

Q10. Which meningeal layer does not closely follow every contour of the spinal cord surface?

• Endosteum
• Arachnoid mater
• Pia mater
• Periosteum