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Neuroanatomy > Blood vessels > Flashcards

Blood vessels Flashcards

1
Q

What is the major artery that gives rise to the anterior circulation? The posterior circulation?

A

Anterior- internal carotid

Posterior- vertebral

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2
Q

What branches off the vertebral artery?

A

The posterior spinal, posterior inferior cerebellar (PICA), and anterior spinal arteries in that order

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3
Q

The vertebral arteries combine to form… which is just anterior to the…

A

The basilar artery

Pons

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4
Q

The basilar artery gives off what arteries?

A

The anterior inferior cerebellar, the pontine branches, and the superior cerebellar in that order. Then it becomes the posterior cerebral arteries

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5
Q

Which arteries connect the anterior and posterior circulations?

A

The posterior communicating arteries

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6
Q

What is the first branch off of the internal carotid artery?

A

The opthalmic artery

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7
Q

What does the internal carotid artery give rise to? (2 arteries) What areas of the brain do these arteries supply?

A

The anterior and middle cerebral arteries.
Anterior- medial aspects of frontal and parietal lobes
Middle- lateral aspect of both hemispheres

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8
Q

What areas of the brain are supplied by the posterior cerebral artery?

A

The occipital lobe, the medial temporal lobe and parts of the posterior parietal lobe

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9
Q

What vessel connects the anterior cerebral arteries?

A

the anterior communicating artery

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10
Q

What vessels make up the circle of willis?

A

The posterior cerebrals, the posterior communicatings, the anterior cerebrals and the anterior communicating

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11
Q

The lenticulostriate arteries come off of the …..

They supply the….

A

Middle cerebral

basal ganglia, amygdala, internal capsule, anterior thalamus

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12
Q

The anterior choroidal arteries come off of the …. and supply….

A 
Middle cerebral (usually)
hippocampus, anterior choroid plexus, posterior internal capsule
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13
Q

A lesion in the anterior cerebral artery presents as…

A

contralateral paralysis and sensory loss in leg and foot, possible apraxia

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14
Q

A lesion in the middle cerebral presents as…

A

contralateral paralysis and sensory loss in everything but the foot and leg, apraxia, aphasia, partial blindness

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15
Q

A unilateral lesion in the posterior cerebral presents as…

A

Blindness in the contralateral visual field and alexia if on left

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16
Q

A bilateral lesion in the posterior cerebral artery presents as…

A

bilateral blindness, memory loss, somatosensory loss, death

17
Q

Sensory deficits and paralysis over an entire 1/2 of the body suggest a lesion of the…

A

lenticulostriate artery/ies

18
Q

What are “cerebellar signs”? Lesions to which arteries produce these?

A

Signs- intention tremor, ataxia, loss of tone, disturbances of gait/posture, inability to make rapidly alternating movements
PICA, AICA and superior cerebellar

Neuroanatomy (10 decks)

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