Neuroanatomy — Practice

Question 1

At what level do the dorsal column fibres carrying vibration and proprioception decussate?

Accepted Answer

B

Question 2

A stroke causing contralateral weakness of the LEG substantially more than the arm involves which artery?

Accepted Answer

B

Question 3

A young woman has bilateral loss of pain and temperature sensation over both shoulders and upper arms, with intact vibration sense, and reports repeated painless burns on her hands. What is the lesion?

Accepted Answer

A

Question 4

Which finding most reliably excludes a LATERAL medullary infarct in a patient with vertigo and crossed sensory loss?

Accepted Answer

C

Question 5

A hypertensive patient suddenly develops violent, involuntary flinging movements of the left arm and leg. Which structure is most likely affected?

Accepted Answer

B

Question 6

After an aortic surgical procedure a patient has flaccid paraplegia with loss of pain and temperature below T10, but vibration and joint position sense are intact. What is the lesion?

Accepted Answer

B

Question 7

A patient has right-sided weakness of the arm and leg with sparing of the face, loss of vibration sense on the right, and the tongue deviates to the LEFT on protrusion. Where is the lesion?

Accepted Answer

B

Question 8

A patient speaks fluently in long sentences that make no sense, cannot follow simple commands, and appears unconcerned about the problem. Repetition is also impaired. Which area is affected?

Accepted Answer

B

Question 9

A 58-year-old develops a painful left third nerve palsy with a fixed dilated left pupil. What does the pupil involvement indicate, and why?

Accepted Answer

B

Practice — Neuroanatomy

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