Vasculature Flashcards
Why can damage to aorta cause damage to the anterior part of the spinal cord?
It can damage the artery of Adamkiewicz which supplies the anterior spinal artery from T12 down.
What two structures do the ICAs pass through on their way to the brain?
Carotid canal
Cavernous sinus
Where do the vertebral arteries run into the skull?
Foramen magnum
What is the posterior and anterior circulation of the brain referring to?
Anterior- ICAs
Posterior- vertebral
The anterior communicating artery joins what?
Anterior cerebral arteries
The ophthalmic artery is a branch of what?
ICA
How many arteries branch off the ICA? They are?
5- posterior communicating, anterior choroidal, anterior cerebral, middle cerebral, ophthalmic
The anterior choroidal artery branches off what?
ICA
The posterior communicating artery joins what?
ICA
Posterior cerebral artery
The posterior cerebral artery is a branch of what?
Basilar artery
The superior cerebellar artery is a branch of what?
Basiliar artery
AICA is a branch of what?
Basilar artery
How many branches does the vertebral artery have?
3- PICA, anterior spinal artery, basilar artery
PICA is a branch of what?
Vertebral artery
The vertebrobasilar arterial system supplies how far up?
Brain stem –> diencephalon –> posterior cortex
What supplies the lateral Brainstem?
PICA
What supplies the most medial region of the medulla?
Anterior spinal artery
What supplies the most lateral region of the medulla?
PICA
What supplies the lateral part of the Pons?
AICA
What supplies the medial part of the pons?
Basilar
What supplies the more medial region of the midbrain?
Basilar
What supplies the lateral region of the midbrain?
Superior cerebellar
Posterior cerebral
What supplies the occipital lobe?
Posterior cerebral
What supplies the medial temporal lobe?
Posterior cerebral
What supplies the inferior temporal lobe?
Posterior cerebral
What supplies the lateral temporal lobe?
Middle cerebral
What supplies the parietal lobe?
Mostly anterior cerebral
What supplies the frontal lobe?
Anterior cerebral
The anterior cerebral artery courses directly superior to which structure?
Cingulate gyrus
Which branches of the middle cerebral artery supply deep structures and are damaged by age, diabetes, HTN and stimulant abuse?
Lenticulostriate arteries
What arteries supply the basal ganglia?
Deep penetrating arteries
What arteries supply the thalamus?
Deep penetrating arteries
What is a watershed?
Area between blood vessel distributions that is susceptible to low MAP from cardiac arrest and causes ischemic tissue that appears as wedges.
Rupture of what veins causes subdural hematomas?
Bridging veins
Which 2 veins drain deep structures in the brain?
Inferior sagittal sinus
Great cerebral vein
What vein drains the eye and orbit?
Cavernous sinuses
Which connects the cavernous sinus to the transverse sinus?
Petrosal sinus
What are the 3 vessels that supply the spinal cord? What do they branch from?
Anterior spinal artery
2 Posterior spinal arteries
Vertebral arteries
