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Cranial Nerves/Vess

CT/MRI cranial nerves and vessels

QuestionAnswer
This is a mixed sensory and motor nerve Vagus Nerve
Blood is supplied to the brain by two pairs of arteries, what are they? carotids and vertebrals
These arteries supply blood to the frontal, temporal and parietal lobes carotids
These arteries supply blood to the posterior circulation of the brain vertebrals
supply blood to the frontal lobe/medial aspect of parietal lobe anterior cerebrals
connects the anterior cerebral arteries anterior communicating artery
This artery is the direct continuation of the internal carotids, supplies blood to temporal and parietal lobes middle cerebral artery
This forms a connections between the internal carotids and the posterior cerebral arteries posterior communicating artery
Composed of the internal carotids, anterior and posterior communicating arteries and the anterior, medial and posterior cerebral arteries Circle of Willis
Venous channels that drain the blood from the brain and meninges dural venous sinuses
Lies along the medial plane, drains blood from the upper cerebral hemispheres superior sagittal sinus
found just superior to the corpus callosum, converges with vein of galen to form straight sinus, receives blood from the deep and medial aspects of the cerebral hemispheres inferior sagittal sinus
great cerebral vein Vein of Galen
receives blood from inferior sagittal sinus and vein of galen and empties into confluence Straight sinus
point of convergence of the superior, sagittal, straight, occipital and transverse sinuses confluence of sinuses
extend laterally on each side of cerebrum, right generally larger, drains blood from confluence and petrous portions of the temporal bone transverse sinus
follows an S shaped pattern, drains into jugular vein Sigmoid sinus
Rounded, berrylike outpouchings that arise from arterial bifurcation points, most common in the circle of Willis sacular aneurysm
when a blood clot forms in the brains venous sinuses, prevents blood from draining out of the brain venous sinus occlusion
form of short limbed dwarfism achrondoplasia
Chronic and progressive condition of the arteries in the brain, causes narrowing of blood vessels that leads to blockages and eventually ischemic stroke, hemorrhagic stroke, and seizures moyamoya disease
a tear of the inside layer of a blood vessel wall that allows blood to flow between the layers that make up the vessel wall dissecting aneurysm of the head
a rare congenital blood vessel malformation in the brain that develops prenatally, a tangled mass of abnormal connection of the arteries and the median prosencephalic vein of Markowski vein of galen malformation
Created by: abgriz81
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