55 - Pain Insensitive and Pain Sensitive structures in Brain

A. Pain Insensitive structures in Brain : (Intracranial)
1. Brain parenchyma
2. Ependyma
3. Choroid plexus
4. Piamatter
5. Arachnoid
6. Dura over convexity of skull ( Dura around vascular sinuses and vessels is sensitive to pain)

B. Pain Sensitive structures in Brain :
B1. Intracranial :
1. Cranial venous sinuses with afferent veins
2. Arteries at base of brain and arteries of dura including middle meningeal artery
3. Dura around venous sinuses and vessels
4. Falx cerebri

B2. Extracranial :
1. Skin
2. Scalp appendages
3. Periosteum
4. Muscles
5. Arteries
6. Mucosa

B3. Nerves :
1. Trigeminal (Fifth cranial nerve)
2. Facial (seventh cranial nerve)
3. Vagal (Tenth cranial nerve)
4. Glossopharyngeal (Ninth cranial nerve)
5. Second and Third cranial nerves