Blood Supply Of The Brain

Question 1

The brain is supplied by 4 arteries…

Answer 1

2 internal carotid + 2 vertebral arteries

Question 2

The 2 vertebral arteries ( branches of the subclavian ) converge to form.

Answer 2

The basilar artery

Question 3

Supplies oxygen to the posterior part of the brain.

Answer 3

The basilar artery

Question 4

Supply oxygen to the anterior and middle part of the brain.

Answer 4

The ICA

Question 5

What are the four segments of the ICA ?

Answer 5

• cervical segment.
• petrous segment.
• cavernous segment. ( one branch => hypophyseal arteries )
• supracavernous. ( 5 branches )

Question 6

What are the 5 branches of the supracavernous segment of the ICA?

Answer 6

• ophthalmic artery.
• anterior cerebral artery.
• middle cerebral artery.
• anterior choroidal artery.
• posterior communicating artery.

Question 7

Branch of the 1st part of the subclavian artery.

Answer 7

The vertebral artery

Question 8

What is the anatomical variation of the vertebral artery?

Answer 8

It could arise directly from the arch of aorta

Question 9

What are the branches of the vertebral arteries?

Answer 9

• meningeal arteries.
• medullary arteries.
• posterior inferior cerebellar arteries (PICA).
• anterior spinal artery.
• posterior spinal artery.

Question 10

Could arise from the posterior inferior cerebellar artery.

Answer 10

The posterior spinal artery

Question 11

Could arise from basilar artery.

Answer 11

The posterior inferior cerebellar artery

Question 12

What are the branches of the basilar artery?

Answer 12

• anterior inferior cerebellar artery.
• labyrinthine artery.
• pontine artery.
• superior cerebellar artery.
• posterior cerebral artery.

Question 13

could arise from AICA or PICA.

Answer 13

Labyrinthine artery

Question 14

Form an anastomosis between the internal carotid system and the vertebrobasilar system.

Answer 14

Circle of Willis

Question 15

The smaller terminal branch of the ICA.

Answer 15

The anterior cerebral artery

Question 16

Connects the two anterior cerebral arteries.

Answer 16

The anterior communicating artery

Question 17

Name the functional cortical areas supplied by ACA?

Answer 17

• frontal cortex.
• prefrontal cortex.
• supplementary motor cortex.
• parts of the primary motor and primary sensory cortices.

Question 18

The corpus callosum supplied by.

Answer 18

The cortical branches of the anterior cerebral artery ( except the splenium )

Question 19

The larger terminal branch of the ICA.

Answer 19

The middle cerebral artery

Question 20

Name the functional areas supplied by the MCA?

Answer 20

• broca’s area.
• wernicke’s area.
• part of motor cortex.
• part of sensory cortex.

Question 21

What part of the internal capsule is supplied by the lateral striate arteries?

Answer 21

The striatum ( putamen + globus pallidus )

Question 22

Supply the splenium of the corpus callosum.

Answer 22

PCA

Question 23

What are the two central branches of the PCA?

Answer 23

1- thalamogeniculate artery ( supplies VP nucleus of thalamus + LGB ).
2- posterior choroidal artery ( supplies choroidal plexuses of the lateral & III ventricles ).

Question 24

What is the arterial supply of the thalamus?

Answer 24

Posterior cerebral artery + posterior communicating artery

Question 25

The lateral part of the hypothalamus supplied by.

Answer 25

The middle cerebral artery

Question 26

The middle cerebral vein drain into.

Answer 26

The cavernous sinus

Question 27

The inferior cerebral vein drain into.

Answer 27

The cavernous and transverse sinuses

Question 28

What are the areas in the brain where the blood-brain barrier is absent?

Answer 28

• the pineal gland.
• the p.lobe of the pituitary gland.
• tuber cerenum.
• wall of the optic recess.
• area postrema.