User:Neurosurgeryislife

EANS TEST - 1 PHASE - i wanna be Rhotons daughter!

ANATOMY REVIEW MENINGES

3 division : dura, pia, arachnoid
 * dura : 2 layers -periosteal and meningeal
 * § spinal dura has one layer - it finish em s2
 * Pia - 2 layer intimal and epipia ( the epipia forms de filum terminalis→coccygeal ligament)
 * spine - denteade liggaments conects epipia to dura Always on lateral surface of spinal cord between the ventral and dorsal roots

Embryology : Mesoderm
 * mesoderm - external meninge and blood vessels


 * ectoderm - pia, aracnoid, glia, ependyma and neural parenchima

 Blood supply : 
 * anterior meningeal artery - branch a. ethmoidal anterior →a. ophtalmic→ACI (1branch)
 * medial meningeal artery →a.maxilar →ACE


 * posterior meningeal artery →a.occiptal ±a.vertebral

INERVATION
 * Supratentorial - Branches V1, V2,V3
 * Infratentorial  - branches C1 e C2 and X par (vagus).