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Block 2 > Lecture 7- Blood Supply of the Brain > Flashcards

Lecture 7- Blood Supply of the Brain Flashcards

1
Q

The arteries of the brain in descending order

A 
Anterior cerebral artery
Anterior communicating artery
Middle cerebral artery
Posterior communicating artery
Posterior cerebral artery
Superior cerebellar artery
Basilar artery
Pontine arteries
Anterior inferior cerebellar artery
Vertebral artery
Posterior inferior cerebellar artery
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2
Q

2 originating arterial trunks

A

Internal carotid artery

Vertebral artery

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3
Q

Internal carotid artery supplies

A

Frontal and occipital lobes

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4
Q

Vertebral artery

A

Occipital lobe, brainstem, cerebellum and upper portion of spinal cord

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5
Q

Internal carotid artery course

A 
Extracranial part enters cranial cavity
via carotid canal
Intracranial S-shape curve called
carotid siphon
Petrous part of temporal bone
Side of sphenoid & within cavernous
sinus
Reaches base of brain lateral to
optic chiasm
Cerebral course pierces dura mater to
reach anterior perforated space
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6
Q

Extracerebral branches of internal carotid

A

Petrous part
Cavernous part
After cavernous course

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7
Q

Petrous part

A

Carototympanic to tympanic cavity

Pterygoid artery to pterygoid canal

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8
Q

Cavernous part

A

Cavernous branches
Meningeal branches
Hypophysial branches

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9
Q

After cavernous course

A

Ophthalmic to contents of orbital cavity

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10
Q

Cerebral branches

A

Choroidal
Anterior
Middle

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11
Q

Choroidal cerebral branch

A 
Choroid plexus
Globus pallidus
Posterior limb of internal capsule
Optic tract and radiation
Hippocampus
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12
Q

Anterior cerebral

A

Smaller, terminal branch of ICA
Cortical branch
Central branch

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13
Q

Cortical branch of ant cerebral artery

A

Medial surface of cerebrum

Marginal area of superolateral surfaces of cerebrum

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14
Q

Central branch of ant cerebral artery

A 
Rostrum of corpus callosum
Septum pellucidum
Putamen
Head of caudate nucleus
Medial thalamostriate
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15
Q

Middle cerebral artery

A

Largest terminal branch of ICA
Cortical
Central
Posterior communicating

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16
Q

Cortical branch of middle cerebral artery

A

Superolateral surface and temporal pole
Insula lobe
Inferolateral parietal lobe

17
Q

Central branch of middle cerebral artery

A 
Lateral striate
Caudate nucleus
Internal capsule
Lentiform nucleus
Charcot's artery
18
Q

Charcot’s artery

A

largest and most ruptured during stroke

19
Q

Vertebral artery origin

A

First part of subclavian artery

20
Q

Vertebral artery course

A

Paravertebral
Vertebral
Atlantic
Intracerebral

Transverse foramen C6-C1
Foramen magnum
Ends at lower boarder of pons, joining opposite vertebral artery to form the basilar artery

21
Q

Branches of vertebral artery

A 
Posterior spinal artery
- dorsal 1/3
Anterior spinal artery
- ventral 2/3
Posterior inferior cerebellar artery
- cerebellum
Medullary artery
- medulla oblongata
Basilar artery
- formed by union of opposing vertebral arteries
22
Q

Branches of basilar artery

A 
Pontine
- pons
Labyrintine
- internal ear
Anterior inferior cerebellar
- anterior and inferior surface of cerebellum
Superior cerebellar
- superior surface of cerebellum
- anastomose with AICA
Posterior cerebral
23
Q

Posterior cerebral artery divisions

A

Cortical
Central
Posterior choroidal

24
Q

Cortical division of posterior cerebral

A

Inferior surface of cerebrum

Occipital pole

25
Q

Central division of posterior cerebral

A

Thalamus
3rd ventricle
Globus pallidus

26
Q

Posterior choroidal

A

Choroid plexus of lateral ventricle
Thalamus
Fornix
Tectum of midbrain

27
Q

Circle of Willis function

A

Arterial anastomosis
Connects vertebrobasilar and internal carotid systems
To equalise blood flow to various parts of the brain
- maintain constant supply of oxygen and glucose
Furnishes collateral circulation of one or more arteries is occluded

28
Q

Circle of Willis location

A

Base of interpeduncular fossa

29
Q

Branches involved in Circle of Willis

A 
Anterior cerebral
Anterior communicating
Posterior communicating
Posterior cerebral
Internal carotid
30
Q

Occlusion of anterior spinal artery

A

Acute thoracic cord syndrome

  • paraplegia
  • incontinence
31
Q

Venous drainage of brain

A 
No valves
Extremely this walls
Lack of muscle in tunica media
Pierce arachnoid mater and inner layer of dura mater
Ends in dural venous sinuses
32
Q

3 sets of brain veins

A

Superficial veins
Deep veins
Dural venous sinuses

33
Q

8 dural venous sinuses

A 
Superior sagittal sinus
Inferior sagittal sinus
Straight sinus
Transverse sinus
Sigmoid sinus
Occipital sinus
Cavernous and intercavernous sinus
Superior petrosal sinus
Inferior petrosal sinus

Block 2 (7 decks)

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