Week Three - Blood Supply, Stroke And Development Flashcards
What are the four initial suppliers of blood to the brain?
Left vertebral Artery
Right vertebral artery
Left carotid artery
Right carotid Artery
The common carotid artery will branch into…
- The internal carotid artery
- will supply blood to the brain
- The external carotid artery
- supplies blood to the facial muscles and forehead
After the internal carotid artery joins the circle of Willis, it divides to form…
- The anterior cerebral artery (ACA)
- The middle cerebral artery (MCA)
Where do the vertebral arteries arise from?
The subclavian arteries
The two vertebral arteries converge to form the…
Basilar artery
What is the largest contributor of blood to the brain?
The middle carotid artery - supplies 80% of the blood to the brain
Where does the middle cerebral artery emerge and what does it supply blood to?
- The lateral sulcus
- Supplies the lateral surface of the frontal, parietal and temporal lobes
- Supplies blood for major areas of:
- speech
- motor and sensory functions
Where does the anterior cerebral artery emerge and what does it supply?
- emerges up through the midsagital surface of the brain
- Supplies the medial surface of the frontal and parietal lobes, corpus callosum, basal ganglia
How is the posterior cerebral artery formed and what does it supply?
- The basilar artery bifurcates
- the lateral & inferior temporal lobes
- the lateral & medial occipital lobes
What artery supplies the midbrain?
Posterior cerebral artery
What artery supplies the pons?
Basilar artery and anterior inferior cerebellar artery
What artery supplies the medulla?
Posterior spinal artery, anterior spinal artery and basilar artery
What supplies the cerebellum?
Superior cerebellar artery, anterior inferior cerebellar artery and the posterior inferior cerebellar artery
What supplies the spinal cord?
Posterior spinal artery and anterior spinal artery
What is a watershed area?
=vascular border zones
-where small-end branches of cerebral arteries approach each other
