### Assessment of MRI Infarct and Arterial Occlusion**Question:**The infarct in the MRI of the brain shown was most likely the result of occlusion of which of the following arteries?**Multiple Choice Options:**A) Anterior cerebral B) Anterior choroidal C) Lenticulostriate D) Middle cerebral E) Posterior cerebral**Correct Answer:**D) Middle cerebral**Description:**The image presented is an MRI scan of the brain. It illustrates an infarct, which is an area of dead tissue caused by a lack of blood supply. Identifying the occluded artery that caused this infarct is essential for diagnosing and treating the underlying condition.**MRI Findings:**The MRI scan shows the brain in a horizontal plane. There is a noticeable region affected by the infarct. The location and extent of the infarct suggest that the middle cerebral artery is the most likely artery to have been occluded, as it is responsible for supplying blood to certain key areas of the brain that include the lateral portion of the hemispheres.**Understanding Arterial Occlusions:**1. **Anterior Cerebral Artery (ACA):** Supplies blood to the medial portions of the frontal lobes and superior medial parietal lobes.2. **Anterior Choroidal Artery:** Supplies various structures within the brain, including the choroid plexus of the lateral ventricles, parts of the visual pathway, and parts of the limbic system.3. **Lenticulostriate Arteries:** Small, deep penetrating arteries that branch from the middle cerebral artery to supply the basal ganglia and internal capsule.4. **Middle Cerebral Artery (MCA):** Supplies the lateral portions of the frontal, parietal, and temporal lobes, and the insular cortex.5. **Posterior Cerebral Artery (PCA):** Supplies the occipital lobe, the inferior portion of the temporal lobe, and various deep structures within the brain.The correct identification of the occluded artery helps direct medical and surgical interventions to restore proper cerebral blood flow and minimize further neuronal damage.

The Middle cerebral Artery (MCA) is by far the largest cerebral artery and is the vessel most…

111. The infarct in the MRI of the brain shown was most likely the result of occlusion of which of the following arteries? A) Anterior cerebral B) Anterior choroidal C) Lenticulostriate D) Middle cerebral E) Posterior cerebral

111. The infarct in the MRI of the brain shown was most likely the result of occlusion of which of the following arteries? A) Anterior cerebral B) Anterior choroidal C) Lenticulostriate D) Middle cerebral E) Posterior cerebral

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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