NPTE-PT NPTE-PT Test Neuromuscular and Nervous Systems Questions and Answers 2

Question 1

A patient with a C6 spinal cord injury would be expected to have intact function of which muscle group?

Accepted Answer

Wrist extensors

Answer

C6 innervates the wrist extensors (extensor carpi radialis longus and brevis), which remain functional at this level.

Question 2

Which type of neuroglial cell is responsible for forming myelin in the central nervous system?

Accepted Answer

Oligodendrocytes

Answer

Oligodendrocytes produce myelin sheaths around axons in the central nervous system.

Question 3

A patient presents with intention tremor, dysmetria, and dysdiadochokinesia. Which brain structure is most likely affected?

Accepted Answer

Cerebellum

Answer

Intention tremor, dysmetria, and dysdiadochokinesia are classic signs of cerebellar dysfunction.

Question 4

During nerve conduction velocity testing, which finding is most consistent with demyelinating neuropathy rather than axonal neuropathy?

Accepted Answer

Significantly reduced conduction velocity

Answer

Demyelinating neuropathies characteristically show markedly reduced conduction velocity due to impaired saltatory conduction.

Question 5

A patient with Parkinson disease demonstrates a shuffling gait pattern. Which neurotransmitter deficiency is primarily responsible for this motor dysfunction?

Accepted Answer

Dopamine

Answer

Parkinson disease results from degeneration of dopaminergic neurons in the substantia nigra, leading to characteristic motor deficits.

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NPTE-PT NPTE-PT Test Neuromuscular and Nervous Systems Questions and Answers 2