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NBME 16 Answers

nbme16/Block 1/Question#26 (6.1 difficulty score)
A 16-year-old boy is brought to the emergency ...
Area labeled by the letter 'E'🔍

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Talking about a boy who lost voluntary movement in his extremities. Thus, his corticospinal tract is injured. It decussates in the medulla, so contralateral limbs are affected. Cross out anything on the left side.

The FA picture is really good with this. Just gotta know E (and F) are the lateral corticospinal tracts.

cassdawg  Tracts are FA2020 p508. +  
wonkyhonky69  Right, but it said he is unable to move his right side, while the answer was right corticospinal tract. I think we had to realize that this slice was below the level of the pyramidal deccusation. +2