Blood Supply to the Brain Flashcards
From what artery does the middle cerebral artery originate from?
Internal carotid artery
From what artery does the anterior cerebral artery originate from?
Internal carotid artery
From what artery does the posterior cerebral artery originate from?
Basilar artery
From which arteries does the basilar artery originate from?
The right and left vertebral arteries
Where does the basilar artery supply?
Cerebellum and brainstem
Where does the anterior cerebral artery supply?
Medial surfaces of the frontal and parietal lobes
Where does the middle cerebral artery supply?
Lateral surfaces of the cerebral hemispheres
Where does the posterior cerebral artery supply?
Inferior brain surface and occipital lobes
What is the name of the ring of connecting arteries at the base of the brain?
Circle of Willis
Where does the venous blood from the brain initially drain to?
Dural venous sinuses
Where are the dural sinuses located?
Between the periosteal and meningeal dural layers
Name 3 sinuses in the brain
Superior saggital sinus
Inferior saggital sinus
Cavernous sinus
What artery gives off the posterior inferior cerebellar artery?
Vertebral artery
What artery gives off the anterior inferior cerebellar artery?
Basilar artery
Which structure does the basilar artery lie on?
Pons
Where does the basilar artery supply?
Brainstem
Give 3 causes of a haemorrhagic stroke
Hypertension
Aneurysm
Thrombocytopenia
Cocaine
Give 3 causes of an ischaemic stroke
Embolism
Blood disorder
Atheroma
Small vessel disease
What type of stroke can go undetected?
Lacunar stroke- blood flow to a deep artery in the brain is blocked
What is the most common type of stroke?
PACS- partial anterior circulation stroke
What are the 3 main symptoms of a TACS (total anterior circulation stroke)?
Contralateral hemiparesis
Contralateral hemianopia
Higher cerebral dysfunction
