NPTE-PT Neuromuscular System Examination 2

Question 1

A deep tendon reflex graded 4+ with clonus indicates:

Accepted Answer

Upper motor neuron lesion

Answer

Hyperreflexia (4+) with clonus is a sign of an upper motor neuron lesion, as the descending inhibitory pathways are disrupted.

Question 2

Which dermatome is tested by assessing sensation over the lateral forearm?

Accepted Answer

C6

Answer

The C6 dermatome covers the lateral forearm, thumb, and index finger, commonly affected in C6 radiculopathy.

Question 3

A patient presents with foot drop on the left side. Which peripheral nerve is most likely damaged?

Accepted Answer

Common peroneal nerve

Answer

The common peroneal nerve innervates the ankle dorsiflexors and evertors; injury at the fibular head is a common cause of foot drop.

Question 4

During the coordination examination, a patient misses the target when performing the finger-nose test with eyes open. This finding is called:

Accepted Answer

Dysmetria

Answer

Dysmetria refers to the inability to accurately judge distance/target during voluntary movement and is a hallmark of cerebellar dysfunction.

Question 5

Muscle tone assessed as resistance throughout the full range of motion that is velocity-independent is best described as:

Accepted Answer

Rigidity

Answer

Rigidity is a velocity-independent increase in muscle tone found throughout the range, characteristic of Parkinson's disease (lead-pipe or cogwheel).

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