ATI RN
Pediatric Neurology Practice Questions Questions
Question 1 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 2 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.
Question 3 of 5
The majority of fibers of the Lateral corticospinal tract synapse:
Correct Answer: B
Rationale: Cervical region . The lateral corticospinal tract, controlling voluntary movement, has most fibers synapsing in the cervical region (C1-C8), innervating upper limbs for fine motor skills (e.g., hands). Choice A (thoracic) is less dominant. Choice C (coccygeal) and D (lumbar) target lower body, with fewer fibers. Thus, B reflects the tracts primary focus, making it correct.
Question 4 of 5
Which of the following tracts is responsible for reflex movement of head and neck in response to visual stimuli:
Correct Answer: D
Rationale: Tectospinal tracts. The tectospinal tract, from the superior colliculus, coordinathead and neck reflexto visual stimuli (e.g., tracking). Choice A (rubrospinal) is for tone. Choice B (vestibulospinal) is for posture. Choice C (spinothalamic) is sensory. Thus, D correctly identifithe tectospinal role, making it correct.
Question 5 of 5
Which of the following statements regarding the course taken by the tracts is Correct:
Correct Answer: D
Rationale: The lateral corticospinal tract has crossed the midline in the medulla oblongata . The lateral corticospinal tract decussatat the medullary pyramids, controlling contralateral movement. Choice A is wrong (rubrospinal crossin midbrain). Choice B is incorrect (tectospinal crossin midbrain, not posterior commissure). Choice C is false (vestibulospinal is ipsilateral). Thus, D is correct.