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Question
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At the level of C3, the anterior and posterior spinal arteries originate primarily from which of the following blood vessels?
Explanation
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The anterior and posterior spinal arteries originate from descending branches of the vertebral arteries in the neck. At cervical levels, segmental arteries branching off the vertebral arteries also contribute.
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Reference
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Page 16,Cho TA. Spinal cord functional anatomy. Continuum (Minneap Minn). 2015 Feb21(1 Spinal Cord Disorders)13-35. doi 10.121201.CON.0000461082.25876.4a. Erratum in Continuum (Minneap Minn). 2015 Jun21(3 Behavioral Neurology and Neuropsychiatry)590. PMID 25651215.
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Option 1
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Is Correct (Option 1):
Anterior spinal artery internal carotid posterior spinal arteries aortic arch
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Option 2
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Is Correct (Option 2):
Anterior spinal artery internal carotid posterior spinal arteries internal carotid
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Option 3
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Is Correct (Option 3):
Anterior spinal artery vertebral posterior spinal arteries aortic arch
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Option 4
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Is Correct (Option 4):
Anterior spinal artery vertebral posterior spinal arteries vertebral
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