Blood supply to the brain

Question 1

How many arteries carry blood into the cranium?

Answer 1

4

Question 2

Which four arteries carry blood into the cranium?

Answer 2

2x internal carotid

2x vertebral

Question 3

Where do the vertebral arteries arise from?

Answer 3

Subclavian arteries

Question 4

Where do the internal carotid arteries arise from?

Answer 4

Common carotid

Question 5

What three arteries supply the spinal column?

Answer 5

1x anterior spinal artery

2x posterior spinal arteries

Question 6

What arteries does the anterior spinal artery give off?

Answer 6

Intercostal arteries

Question 7

Where does the anterior spinal artery terminate?

Answer 7

Both vertebral arteries

Question 8

Where do the posterior spinal arteries terminate?

Answer 8

Their ipsilateral vertebral artery

Question 9

In relation to the vertebrae where do the spinal arteries run?

Answer 9

In the vertebral foramen.

Question 10

Where do the vertebral arteries flow?

Answer 10

Transverse process foramen

Question 11

What do the vertebral arteries link to form?

Answer 11

Basilar artery

Question 12

What does the basilar artery split into?

Answer 12

Posterior cerebral arteries

Question 13

What artery comes off the posterior cerebral artery anteriorly?

Answer 13

Posterior communicating arteries

Question 14

Where do the posterior communicating arteries link to?

Answer 14

Internal carotid/middle cerebral arteries

Question 15

What is the first artery to come off the internal carotid?

Answer 15

Ophthalmic

Question 16

What does the internal carotid artery become?

Answer 16

Middle cerebral artery

Question 17

What links the two anterior cerebral arteries?

Answer 17

Anterior communicating artery

Question 18

Where does the posterior cerebral artery supply?

Answer 18

Posterior aspect of cerebral hemisphere and visual cortexes.

Question 19

Where does the middle cerebral artery supply?

Answer 19

Lateral aspect of cerebral hemisphere

Question 20

Where does the anterior cerebral artery supply?

Answer 20

Medial aspect of cerebral hemisphere

Question 21

What is the venous drainage of the spinal column?

Answer 21

Anterior and posterior internal vertebral venous plexus

Question 22

Where is the circle of WIllis located?

Answer 22

Inferior to the midbrain, closely related to the pituitary stalk & the optic chiasm, within the subarachnoid space

Question 23

What drains blood from the cerebral hemispheres?

Answer 23

Cerebral veins

Question 24

Where do cerebral veins drain?

Answer 24

Duravenal sinuses

Question 25

Where are the duravenal sinuses found?

Answer 25

Between a separation in the dura mater

Question 26

Which is the biggest duravenal sinus?

Answer 26

Superior sagittal sinus

Question 27

Where does the superior sagittal sinus run?

Answer 27

Longitudinally centrally superiorly

Question 28

Where does the superior sagittal sinus drain into?

Answer 28

Confluence of sinuses

Question 29

Where is the Confluence of sinuses?

Answer 29

Midline at the internal occipital protuberance

Question 30

What two structures drain into the confluence of sinuses?

Answer 30

Superior sagittal sinus

Inferior sagittal sinus

Question 31

Where does the confluence of sinuses drain?

Answer 31

Sigmoid sinuses -> jugulars

Question 32

What is a major sinus located near the pituitary gland?

Answer 32

Cavernous sinus

Question 33

What drains into the cavernous sinus?

Answer 33

Ophthalmic and facial veins