Answer and Discussion of Quiz Set: N-025

1.    A 65 year-old man was admitted to the emergency room because of left side upper and lower extremity weakness. On neurologic examination, there was also paralysis of the left face. Ocular movement of both eyes, however, were normal. These symptoms were most likely resulted from blockage of which of the following arteries?

A.  Anterior communicating artery

B.  Left anterior cerebral artery

C.  Right anterior cerebral artery

D.  Left middle cerebral artery

E.  Right middle cerebral artery

Answer and Discussion: The answer is (E). The left side weakness on both the face and the left side extremities indicates that the right motor cortex or its downs stream axons are affected. This area is supplied by the right middle cerebral artery.