Blood supply to the Brain (Yr1 Qs)

Question 1

which of the following is formed from basilar artery:

anterior spinal artery
middle cerebral artery
posterior cerebral artery
posterior inferior cerebellar artery
anterior cerebral artery

Answer 1

which of the following is formed from basilar artery:

anterior spinal artery
middle cerebral artery
posterior cerebral artery
posterior inferior cerebellar artery
anterior cerebral artery

Question 2

what is D?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Answer 2

what is C?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
​internal carotid artery

Question 3

what is A?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Answer 3

what is A?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Question 4

what is E?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Answer 4

what is E?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Question 5

what is C?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Answer 5

what is C?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Question 6

what is B?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Answer 6

what is B?

middle cerebral artery
basilar artery
posterior cerebral artery
anterior cerebral artery
internal carotid artery

Question 7

draw the circle of willis xxx

Answer 7

Question 8

Label A-C

Answer 8

A: anterior cerebral artery
B: middle cererbral artery
C: internal carotid artery

Question 9

under normal circumstances, what are the anterior and posterior communicating arteries like?

Answer 9

closed !!

classic circle of willis is seen in ~1/3rd pop

Question 10

label A-D [4]

Answer 10

A: vertebral artery
B: superior cerebellar artery
C: posterior cerebral artery
D: basilar artery

Question 11

when does collateral circulation open? [1]

Answer 11

collateral circulation should only open when there is a pressure difference (increased pressure can open anterior / posterior communicating arteries)

Question 12

what is most normal variant in cerebral arterial circle? [1]

Answer 12

what is most normal variant in cerebral arterial circle? [1]
one / both posterior communicating arteries are missing (e & f)

Question 13

what are the main branches of the internal carotid artery? [4]

Answer 13

1. opthalmic artery: orbit & retina. connects to external carotid artery
2. posterior communicating: connext with carotid & vertebral artery system
3. middle cerebral artery: connects to basal ganglia and lateral 2/3rds of cortex
4. anterior cerebral artery: connects with medial side frontal & parietal lobes, anastamoses with MCA

Question 14

which artery is a branch of the ICA that occurs in the cavernous sinus?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Answer 14

which artery is a branch of the ICA that occurs in the cavernous sinus?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Question 15

which of the following supplies the basal ganglia & lateral 2/3rd of the cortex?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Answer 15

which of the following supplies the basal ganglia & lateral 2/3rd of the cortex?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Question 16

which of the following supplies the medial side of frontal and parietal lobes?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Answer 16

which of the following supplies the medial side of frontal and parietal lobes?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Question 17

which of the following anastamoses with the MCA?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Answer 17

which of the following anastamoses with the MCA?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Question 18

which of the following connects to the external carotid artery?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Answer 18

which of the following connects to the external carotid artery?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Question 19

which of the following supplies the corpus callosum?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Answer 19

which of the following supplies the corpus callosum?

middle cerebral artery
anterior cerebral artery
posterior communicating artery
menigeal branch
opthalmic artery

Question 20

what is A?

Answer 20

cavernous sinus

Question 21

Answer 21

Question 22

middle cerebral artery goes between which two brain lobes to get to lateral wall?

temporal & parietal
temporal and occiptal
temporal and frontal
parietal and occipital
occipital and cerebellum

Answer 22

middle cerebral artery goes between which two brain lobes to get to lateral wall?

temporal & parietal
temporal and occiptal
temporal and frontal
parietal and occipital
occipital and cerebellum

Question 23

which artery most commonly supplies Broca’s & Wernicke’s areas?

ACA
MCA
PCA
Basilar A
ICA

Answer 23

which artery most commonly supplies Broca’s & Wernicke’s areas?

ACA
MCA
PCA
Basilar A
​ICA

Question 24

which arteries supply 1-5?

Answer 24

1: anterior cerebral A
2: middle cerebral A
3: posteror cerebral A
4: anterior choroidal A
5: lenticulostriate (branch of MCA)

Question 25

describe the pathway of the posterior circualation of the brain?

Answer 25

vertebral: - has **anterior spinal arteries** and **posterior spinal arteries (x2**) going inferiorly - has **PICA** branching off to dorsal medulla of brainstem turns into the **basilar artery:** - has **anterior inferior cerebellar artery** (**AICA**) and **superior cerebellar artery** arching off redivides at the superior cerebellar arteries and continues to **posterior cerebral arteries - **supplies the inferior and medial aspects of temporal and occipital cortex - thalamus - midbrain - anastamoses with MCA

Question 26

which artery provides blood to the pons? PICA AICA superior cerebllar artery pons posterior cerebral artery

Answer 26

which artery provides blood to the pons? PICA AICA superior cerebllar artery **pons (via pontine arteries)** ​posterior cerebral artery

Question 27

which artery provides blood to the midbrain & thalamus PICA AICA superior cerebllar artery pons ​posterior cerebral artery

Answer 27

which artery provides blood to the midbrain & thalamus ​ PICA AICA superior cerebllar artery pons **​posterior cerebral artery**

Question 28

Answer 28

Question 29

which of the following is the vertebral artery? A B C D E

Answer 29

which of the following is the vertebral artery? A B C **D** E

Question 30

which of the following is the PICA? A B C D E

Answer 30

which of the following is the PICA? A B **C** D E

Question 31

which of the following is the anterior spinal artery? A B C D E

Answer 31

which of the following is the anterior spinal artery? A B C D **E**

Question 32

which of the following is the basilar artery? A B C D E

Answer 32

which of the following is the basilar artery? ​ **A** B C D E

Question 33

which of the following is the AICA? ​ A B C D E

Answer 33

which of the following is the AICA? ​ A **B** C D E

Question 34

what do arachnoid granulations allow to occur? [1]

Answer 34

arachnoid granulations: **allow CSF to flow into venous blood of sinuses but prevent backflow of blood into sub-arachnoid space**

Question 35

which sinus do most cerebral veins drain into? straight sinus transverse sinus superior saggital sinus inferior saggital sinus sigmoid sinus

Answer 35

which sinus do most cerebral veins drain into? straight sinus transverse sinus **superior saggital sinus** inferior saggital sinus sigmoid sinus

Question 36

which of the following is the straight sinus? A B C D E

Answer 36

which of the following is the straight sinus? A B **C** D ​E

Question 37

which of the following is the sigmoid sinus? A B C D ​E

Answer 37

which of the following is the sigmoid sinus? A B C D **​E**

Question 38

which of the following is the superior sagittal sinus? A B C D ​E

Answer 38

which of the following is the superior sagittal sinus? **A** B C D ​E

Question 39

which of the following is the transverse sinus? A B C D ​E

Answer 39

which of the following is the transverse sinus? A B C **D** ​E

Question 40

which of the following is the inferior sagittal sinus? A B C D ​E

Answer 40

which of the following is the inferior sagittal sinus? A **B** C D ​E