Card 2 / 23: What major cerebral vessel is lateral to the chiasm?
A.)
Anterior cerebral artery.
B.)
Middle cerebral artery.
C.)
Internal carotid.
D.)
Posterior communicating artery.
Answer:
C.) Internal carotid.
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The internal carotid artery is immediately lateral to the chiasm. Ballooning of the vessel wall, (an aneurysm), can cause pressure on the chiasm and cause a partial, nasal hemianopsia.
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