USMLE Forum Archives - USMLE Step 1 - mdp9
mdp9
babbu5508 - 05-31-11 23:59
Which of the following would the patient most likely be able to do on further evaluation?
/ A. Name objects
/ B. Raise his eyebrows symmetrically
/ C. Repeat words
/ D. Stick out his tongue without deviation
/ E. Write words
babbu5508 - 05-31-11 23:59
Which of the following would the patient most likely be able to do on further evaluation?
/ A. Name objects
/ B. Raise his eyebrows symmetrically
/ C. Repeat words
/ D. Stick out his tongue without deviation
/ E. Write words
The correct answer and explanation will be available after you answer.
Page 1
#1
Re: mdp9 dinmenace - 06-02-11 12:24 My answer is: b.
The middle cerebral artery (MCA) is one of the three major paired arteries that supplies blood to the cerebrum. The MCA arises from the internal carotid and continues into the lateral sulcus where it then branches and projects to many parts of the lateral cerebral cortex. It also supplies blood to the anterior temporal lobes and the insular cortices.
#2
Re: mdp9
babbu5508 - 06-16-11 01:25 The correct answer is B. Corticobulbar fibers have bilateral input to the upper face division of the facial nucleus, while the lower face division of the facial nucleus has contralateral input. Therefore, an upper motor neuron lesion involving these corticobulbar fibers, such as a cortical stroke, would result in weakness of the lower half of the contralateral face, while sparing the upper half of the contralateral face due to this bilateral input
Page 1