A patient is brought to the ER because of left arm weakness….

A patient is brought to the ER because of left arm weakness. On exam, the patient demonstrates: -> left lower facial paresis, but he can wrinkle his brow, -> a right gaze preference (i.e., eyes deviate to right), -> speech is relatively normal. Evaluation of strength reveals: -> moderate weakness of the left arm but normal strength in all other extremities. Additionally, the patient shows: -> diminished fine touch, proprioception, pain and temperature sensitivity for the left arm and face. A stroke in which of the following vessels is most likely the cause of the patient’s symptoms? 

This exact case applies to this and the following 5 question…

This exact case applies to this and the following 5 questions. A 22-year-old male is brought to the ER with knife wounds and the following symptoms: -> initial flaccid paralysis of his right arm and leg, -> deficits in proprioception and vibratory sensation on his right side below the level of C6, and -> decreased pain and temperature sensation on his left side below the level of C4.A lesion in which of the following locations best accounts for the flaccid paralysis of the right extremities? Pick all that apply.