Question

If someone has a medial medulla lesion, which arteries have a possibility to be involved?

1) Anterior spinal artery
2) Posterior inferior cerebellar artery
3) Vertebral artery
4) All of the above

Answer 1

A medial medulla lesion could involve the Anterior spinal artery, the Posterior inferior cerebellar artery, or the Vertebral artery due to their roles in supplying blood to the medulla.

Step-by-step explanation:

If someone has a medial medulla lesion, the arteries with a possibility of being involved include the Anterior spinal artery, which supplies the anterior aspect of the spinal cord, the Posterior inferior cerebellar artery (PICA), which supplies part of the cerebellum, and the medulla, and the Vertebral artery, since it is one of the primary arteries that forms the anterior spinal artery and provides blood to the medulla before merging into the basilar artery. A lesion in the medial medulla could potentially affect any of these arteries due to their vascular contributions to that region. It enters the cranium through the foramen magnum of the occipital bone and gives rise to branches that merge into the anterior spinal artery supplying the anterior aspect of the spinal cord. Therefore, the correct answer is 3) Vertebral artery.