Which circulatory system includes the internal carotid arteries and their branches ACA and MCA?

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Explore the Hemispheres 3.0 Level I Brain Anatomy and Physiology Test. Study with detailed questions, answers, and hints. Enhance your knowledge and boost your preparation for success!

Multiple Choice

Which circulatory system includes the internal carotid arteries and their branches ACA and MCA?

Explanation:
The circulation being described is the anterior circulation. The internal carotid arteries form the main supply to the brain’s anterior portion, giving rise to the anterior cerebral artery (ACA) and the middle cerebral artery (MCA). The ACA mainly supplies the medial surfaces of the frontal and parietal lobes, while the MCA supplies the lateral aspects of the cerebral hemispheres. The posterior circulation, in contrast, comes from the vertebrobasilar system and includes the posterior cerebral arteries. The Circle of Willis connects these circulations but the vessels in question are characteristic of the anterior system.

The circulation being described is the anterior circulation. The internal carotid arteries form the main supply to the brain’s anterior portion, giving rise to the anterior cerebral artery (ACA) and the middle cerebral artery (MCA). The ACA mainly supplies the medial surfaces of the frontal and parietal lobes, while the MCA supplies the lateral aspects of the cerebral hemispheres. The posterior circulation, in contrast, comes from the vertebrobasilar system and includes the posterior cerebral arteries. The Circle of Willis connects these circulations but the vessels in question are characteristic of the anterior system.

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