Which MCA segment is the horizontal segment, the most proximal main stem that begins as a wide single artery and continues horizontally under the frontal lobe?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

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 MCA segment is the horizontal segment, the most proximal main stem that begins as a wide single artery and continues horizontally under the frontal lobe?

Explanation:
The horizontal, proximal main stem described is the M1 segment of the middle cerebral artery. It starts at the internal carotid artery bifurcation as a wide single trunk and runs laterally in the Sylvian fissure, staying under the frontal lobe before it divides into the more distal M2 branches. The other segments—M2, M3, and M4—are progressively more distal cortical branches that arise after this initial trunk. So, the features given point to the M1 segment.

The horizontal, proximal main stem described is the M1 segment of the middle cerebral artery. It starts at the internal carotid artery bifurcation as a wide single trunk and runs laterally in the Sylvian fissure, staying under the frontal lobe before it divides into the more distal M2 branches. The other segments—M2, M3, and M4—are progressively more distal cortical branches that arise after this initial trunk. So, the features given point to the M1 segment.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy