ATI RN
Pediatric Neurology Practice Questions Questions
Question 1 of 5
Which of the following is the most common direction of Disc herniation:
Correct Answer: D
Rationale: Posterolateral direction . Disc herniation most commonly occurs posterolaterally because the posterior longitudinal ligament, which reinforcthe disc posteriorly, is narrower and weaker laterally, allowing the nucleus pulposus to protrude toward the sidof the spinal canal, often compressing nerve roots. Choice A, Posteromedial, is less common due to the ligaments central strength. Choice B, Anteromedial, is rare as the anterior longitudinal ligament prevents anterior herniation. Choice C, Superior, is incorrect as herniations dont typically project upward. Thus, Posterolateral is the most frequent direction, making D the correct answer.
Question 2 of 5
During a neurological examination, a patient cannot tell with his eyclosed whether the neurologist flexed or extended his toe, there is likely damage to:
Correct Answer: D
Rationale: The dorsal column medial lemniscal pathway . This pathway carriconscious proprioception (position sense), vibration, and fine touch. Damage prevents the patient from sensing toe position with eyclosed. Choice A (spinothalamic) carripain and temperature, not proprioception. Choice B (precentral gyrus) is motor, not sensory. Choice C (ventral spinal cord) affects motor tracts, not proprioception. Thus, D identifithe correct pathway for position sense, making it the right answer.
Question 3 of 5
A 29 year old patient was investigated at the neurology clinic, and it was noted that she lacks the two point discrimination ability in her left hand. What is the most likely cause of such a presentation:
Correct Answer: C
Rationale: Medial lemniscus lesion in the right side of the pons . Two-point discrimination (fine touch) from the left hand travels via the fasciculus cuneatus (upper limb) on the left side, decussatin the medulla as the medial lemniscus, and ascends on the right side to the thalamus. A right pons lesion in the medial lemniscus disrupts this crossed pathway, causing left-hand deficit. Choice A (right C2) affects the wrong side pre-decussation. Choice B (right C5) is ipsilateral, not affecting left hand post-decussation. Choice D (gracilis) is for lower limbs. Thus, C matchthe crossed pathway disruption, making it correct.
Question 4 of 5
Wrong about fast pain:
Correct Answer: B
Rationale: Transmitted by A-alpha . Fast pain, sharp and localized, is transmitted by A-delta fibers, not A-alpha, which carry proprioception and motor signals. Choice A is correct (less emotional than slow pain, C-fiber mediated). Choice C is true (synapsin laminae I and V of dorsal horn). Choice D is accurate (superficial, well-localized). Thus, B misattributfast pain to A-alpha instead of A-delta, making it the wrong statement and the correct answer.
Question 5 of 5
One of the following statements relate sensations with the appropriate nervous pathways:
Correct Answer: C
Rationale: Unconscious muscle joint sense travels in the anterior spinocerebellar tract . The anterior spinocerebellar tract carriunconscious proprioception from lower limbs to the cerebellum via the superior cerebellar peduncle. Choice A is wrong (two-point discrimination is dorsal column). Choice B is incorrect (pain is lateral spinothalamic). Choice D is false (no posterior spinothalamic tract; pressure is anterior spinothalamic). Thus, C accurately pairs the sensation and pathway, making it correct.