Flashcards in 4.2 Brain Blood Supply Deck (26):
Where do the vertebral arteries arise from and go to?
Come off subclavian arteries
Through transverse foramina
Into skull through foramen magnum
Where do the vertebral arteries enter the brain circulation?
What do the vertebral arteries join together to form?
What is the main input of blood into the posterior circulation of the brain?
What is the main input of blood into the anterior circulation of the brain?
Internal Carotid arteries
Why is it important to consider the brain in terms of anterior and posterior blood circulation?
Different clinical pictures can present depending in which area a stroke is found
What are the two main vessels in the anterior circulation going into the brain?
Anterior and middle cerebral arteries
What area of the brain does the middle cerebral artery supply?
The majority of the lateral aspect
What kind of stroke can affect the visual fields?
What is the link of the Circle of Willis between the anterior cerebral arteries called?
Anterior communicating artery
What does the basilar artery sit on/in front of?
What do the posterior cerebral arteries come off of?
Which blood vessel supplies the primary visual cortex?
How are the posterior and anterior cerebral arteries connected to each other?
Via the posterior communicating arteries
What is the purpose of the circle of Willis?
Collateral blood supply
In case there is a blockage
How are the anterior spinal arteries formed?
Small branches off each vertebral artery
What do the anterior spinal arteries supply?
Anterior 2/3 of spinal cord
What are the branches off the basilar artery called?
Which bloods vessel(s) supply the pons and what vessels are these a branch of?
What is affected in Locked in Syndrome?
What do the superior cerebellar arteries supply?
Top of cerebellum
What do the anterior and posterior inferior cerebellar arteries supply?
Front and back bottom portions of the cerebellum
Which vessel does the opthalmic artery come off of?
Middle cerebral artery
What important set of vessels come off the middle cerebral artery?
Why are the lenticulostriate arteries susceptible to emboli?
Because they are so small