NPTE-PTA Neuromuscular & Nervous System 1

Question 1

Which spinal cord level is responsible for the knee jerk (patellar) reflex?

Accepted Answer

L3–L4

Answer

The patellar (knee jerk) reflex is mediated through the L3–L4 spinal cord segments.

Question 2

A patient with a complete C6 spinal cord injury would retain which muscle function?

Accepted Answer

Wrist extensors

Answer

C6 innervates the extensor carpi radialis, so wrist extension is preserved in a complete C6 injury.

Question 3

Which type of stroke causes deficits on the SAME side as the lesion?

Accepted Answer

Cerebellar stroke

Answer

Cerebellar lesions cause ipsilateral (same-side) deficits because the cerebellum controls the same side of the body.

Question 4

The Romberg test primarily assesses which sensory system?

Accepted Answer

Proprioception

Answer

The Romberg test assesses proprioceptive (somatosensory) function by removing visual input while the patient stands.

Question 5

Which gait deviation is most characteristic of a patient with foot drop?

Accepted Answer

Steppage gait

Answer

Steppage gait (exaggerated hip and knee flexion to clear the foot) is the compensatory pattern for foot drop.

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