QuestionSBA
QuestionChoice
Incorrect. The arrow points to the anterior cerebral artery, which is a terminal branch of the internal carotid artery, the source of the 'anterior' circulation of the brain. The external carotid artery does not contribute to the circle of Willis and the arterial supply of the brain.
10009146
b
External carotid artery
QuestionChoice
Incorrect. The arrow points to the anterior cerebral artery, which is a terminal branch of the internal carotid artery, the source of the 'anterior' circulation of the brain. The vertebral arteries are the source of the 'posterior' circulation of the brain. They give off the meningeal branches, the anterior and posterior spinal arteries, and the posterior inferior cerebellar arteries, before converging to form the basilar artery.
10009147
c
Vertebral artery
QuestionChoice
Correct. The arrow points to the anterior cerebral artery, which is a terminal branch of the internal carotid artery, the source of the 'anterior' circulation of the brain. The anterior cerebral arteries are connected via the anterior communicating artery in the circle of Willis, and supply the frontomedial portions of the cerebrum.
10009145
a
Internal carotid artery
QuestionChoice
Incorrect. The arrow points to the anterior cerebral artery, which is a terminal branch of the internal carotid artery, the source of the 'anterior' circulation of the brain. The basilar artery is formed by the union of the the vertebral arteries, and supplies the pons and cerebellum. It also gives rise to the terminal posterior cerebral arteries, contributing to the 'posterior' circulation of the brain, supplying the posterior cerebrum.
10009148
d
Basilar artery
QuestionChoice
Incorrect. The arrow points to the anterior cerebral artery, which is a terminal branch of the internal carotid artery, the source of the 'anterior' circulation of the brain. The middle cerebral arteries are continuations of the internal carotid arteries after the anterior and posterior communicating arteries have been given off, and supply the lateral parts of the cerebrum.
10009149
e
Middle cerebral artery
Concept
Chapter
2693
5312
Arteries of the brain
Topic
196
Neuroanatomy
14376
Picture
1736
31 - Arteries of the brain (ACA).png
images/5j7hgqc11682950638494.jpg
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images/5j7hgqc11682950638494_512.jpg
mCgOFYQ3d5l6hniQemqHdxh5gLEH
Topic
196
Neuroanatomy
Which of the following best described the origin of the labelled structure?

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a