ATI RN
Pediatric Neurology Practice Questions Questions
Question 1 of 5
Wrong about lateral spinothalamic:
Correct Answer: C
Rationale: Synapse in ventral posteromedial nucleus of the thalamus . The lateral spinothalamic tract, carrying pain and temperature, synapsin the ventral posterolateral (VPL) nucleus of the thalamus, not the ventral posteromedial (VPM) nucleus, which processfacial sensations via the trigeminal pathway. Choice A is correct (crossvia anterior white commissure). Choice B is true (projects widely to cortex). Choice D is accurate (pain and temperature). Thus, C misidentifithe thalamic nucleus, making it the wrong statement and the correct answer.
Question 2 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 3 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 4 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.
Question 5 of 5
Which of the following statements concerning the nucleus of termination of the tracts listed below is correct:
Correct Answer: D
Rationale: The anterior spinothalamic tract terminatin the ventral posterolateral nucleus of the thalamus . The anterior spinothalamic tract (crude touch) terminatin the VPL nucleus of the thalamus, relaying to the cortex. Choice A is wrong (posterior columns end in nucleus gracilis/cuneatus). Choice B is false (spinoreticular ends in reticular formation). Choice C is incorrect (spinotectal ends in superior colliculus). Thus, D is accurate, making it correct.