Neuroanatomy USMLE Step 1 Practice Question
A patient's left eye is deviating medially, and attempts to look to the left go no farther than the midline. The patient cannot wrinkle his forehead or smile on the left side. He has Babinski's sign and increased reflexes in the right upper and right lower limbs. Based on these signs and symptoms, where is this patient's brain lesion?
Answer choices
- ALeft ponsCorrect answer
- BRight medulla
- CLeft cerebral cortex
- DRight cerebral cortex
- ELeft midbrain
- FRight pons lesion
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.