Blood Supply to Brain

Question 1

2 Systems:
Anterior System-Carotiss System
Posterior System; Vertebral System

Answer 1

1. Vertebral System
   - Through Foramen Magnum
   - pierce Dura matter,until subarachnoid matter

Question 2

2 Systems:
Anterior System-Carotiss System
Posterior System; Vertebral System (Subclavia Arteries)

Answer 2

1. Vertebral System
   - Through Foramen Magnum
   - pierce Dura matter,until subarachnoid matter
   - Both left and right vertebral arterier meet at Pontomedullary Junction
   - Basalar Artery->Terminal branches->they go posteriorly->Posterior Cerebral Arteries

Branches Of Vertebral System:

• Anterior Spinal Artery
• Posterior Spinal Artery
• Posterior Inferior Cerebellum Artery
• Anterior inferior Cerebellum Artery
• lebrentay Artery
• Superior Cerebellum Arteries

2. Anterior System-Carotid System
   - Supplies Cerebral Hemisphere
   - Through Carotid Canal->Foramen Leserum->cavernous Sinus->Subarachnoid Space

Branches of Carotiden Artery

• Ophtalmic Artery
• Central Retinal Artery
• Posterior Communicating Artery between Carotid System and Ventrobasalar System(Vertebral System)
• Anterior Choroidal Artery(Anterior but goes Posterior)
• Middle Cerebral Artery
• Anterior Cerebral Artery

!!!!!! Circle Of Villus: Anterior with Posterior CIrculation Connection and the right and left Carotid Connection!!

Question 3

Major Arteriell System of the Brain in the subarachnoid Space

Answer 3

Great Medullary Art. of Adam

Question 4

Least Blood Supplies of Spinal Arteries Areas

Answer 4

Posterior Spinal Artery Th1,2,3

Anterior Spinal Artery Th4 L1