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Neurology and Neurological Assessment Flashcards

7 cards from real NBCE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Neurology and Neurological Assessment flashcards as text

  1. Which nerve roots mediate the patellar (knee jerk) reflex?

    Answer: L3-L4

    The patellar reflex tests the L3-L4 nerve roots via the femoral nerve and the quadriceps muscle.

  2. The C6 dermatome primarily covers which anatomical area?

    Answer: The thumb, index finger, and lateral forearm

    The C6 dermatome supplies the thumb, index finger, and lateral forearm, making it the key level affected by C5-C6 disc herniations.

  3. The Achilles tendon reflex (ankle jerk) primarily tests which nerve root?

    Answer: S1

    The Achilles reflex is mediated by S1 via the tibial nerve and tests the gastrocnemius-soleus complex.

  4. An upper motor neuron (UMN) lesion characteristically produces which clinical finding?

    Answer: Hyperreflexia and spasticity

    UMN lesions produce hyperreflexia, spasticity, and a positive Babinski sign due to loss of descending cortical inhibition on spinal reflex arcs.

  5. Weakness in great toe extension (extensor hallucis longus) is most indicative of which nerve root compression?

    Answer: L5

    The extensor hallucis longus is primarily innervated by L5 via the deep peroneal nerve, making great toe extension weakness the classic L5 myotomal test.

  6. A positive Brudzinski sign is a clinical indicator of which condition?

    Answer: Meningeal irritation

    Brudzinski sign is positive when passive neck flexion causes involuntary hip and knee flexion, indicating meningeal irritation as seen in meningitis or subarachnoid hemorrhage.

  7. Which dermatome covers the lateral thigh region?

    Answer: L2

    The L2 dermatome covers the anterior and lateral thigh, and is supplied by the lateral femoral cutaneous and femoral nerves.