Overview of brain

Question 1

What is the difference between spinal and brain meninges?

Answer 1

Spinal cord

• Epidural space
• denticulate ligaments
• no subdural space

Cranial meniges

• none of the above

Question 2

Describe the CSF circulation

Answer 2

• Produced via the choroid plexus
• to lateral, 3rd and 4th ventricles and central canal
• Released to the subarachnoid space via the medial and lateral appertures (foramen of magendi and foramen of luschka)
• Released into the sinus via arachnoid granulations

Question 3

Middle cerebral artery blood supply?

Answer 3

Lateral surfaces of temporal, frontal, occiptal and parietal lobes Basal ganglia and insula

Question 4

Anterior cerebral artery blood supply?

Answer 4

• Corpus callusom (medial surface) and superior surfaces of the frontal and parietal lobes

Question 5

Posterior cerebral artery blood supply?

Answer 5

• Occipital lobes and inferior portion of the temporal lobe