Blood Vessels That Supply The Brain

Question 1

4 Major Blood Vessels

Answer 1

2 Vertebral

2 Internal carotid

Question 2

Vertebral Arteries

Answer 2

Pass through transverse foramen of vertebrae

Enter brain with spinal cord through foramen magnum

Question 3

Internal Carotid Arteries

Answer 3

Enter skull through own opening within base of skull

Come halfway up carotid canal, then halfway up foramen lacerum

Question 4

Middle Cerebral Artery

Answer 4

Supplies many deep structures and lateral aspect of cerebrum

Breaks up into several large branches

Question 5

Anterior Cerebral Artery

Answer 5

Around genu of corpus callosum to supply anterior frontal lobe and medial aspect of hemisphere

Question 6

Posterior Cerebral Artery

Answer 6

Curves around brain stem

Supply mainly occipital lobe, choroid plexus of 3rd and lateral ventricles and lower surface of temporal lobe

Question 7

Stroke affecting MCA

Answer 7

Weakness and sensory loss in contralateral face and arm

Question 8

Stroke affecting ACA

Answer 8

Weakness in contralateral leg

Question 9

Cerebral Veins

Answer 9

Have no valves and seldom accompany corresponding cerebral arteries

Question 10

Venous Drainage

Answer 10

Includes veins of brain, dural venous sinuses, dura’s meningeal veins and diploid veins

Question 11

Sphenoparietal Sinus

Answer 11

Drains deep middle cerebral vein into cavernous sinus

Question 12

Cavernous Sinus

Answer 12

Either side of sella turcica

Receives drainage from multiple sources (ophthalmic/facial vein)

Question 13

Blood from Cavernous Sinus

Answer 13

Leaves via superior/inferior petrosal sinuses (drain into beginning and end of sigmoid dural sinus)