ATI RN
Pediatric Neurology Questions Questions
Question 1 of 5
Consider the sensory pathways for the following two sensations: Discriminative touch sensations from the left foot, Heat sensations from the right leg. Choose the correct statement:
Correct Answer: D
Rationale: A right hemisection in the spinal cord at the level of the C4 segment would spare (preserve) both sensations . Discriminative touch (left foot) travels via the dorsal column (ipsilateral, left side) and decussatin the medulla, while heat (right leg) crossimmediately via the spinothalamic tract to the left side. A right C4 hemisection sparleft-sided dorsal column (touch) and already-crossed left-sided spinothalamic (heat) fibers. Choice A is wrong (touch ascends left, heat left). Choice B is false (heat synapsin spinal cord, not gracilis). Choice C is incorrect (both go to parietal lobe, not frontal). Thus, D is correct.
Question 2 of 5
Regarding slow pain, all of the following are true EXCEPT:
Correct Answer: A
Rationale: Slow pain is mostly arisfrom superficial structur, which is false. Slow pain, dull and poorly localized, often arisfrom deep structur(e.g., viscera, muscles), not just superficial ones, and is transmitted by C fibers . Choice B is true (referred pain, e.g., gallstonto shoulder). Choice D is correct (cingulate gyrus processemotional pain). Thus, A inaccurately limits slow pain to superficial origins, making it the exception and the correct answer.
Question 3 of 5
Which of the following tracts providafferent information for spinovisual reflexes:
Correct Answer: D
Rationale: Spinotectal. The spinotectal tract providsensory input (e.g., pain, touch) to the superior colliculus for spinovisual reflexes, like orienting head/eyto stimuli. Choice A (anterior spinothalamic) is for crude touch to thalamus. Choice B (lateral spinothalamic) is for pain/temperature. Choice C (posterior spinocerebellar) is for unconscious proprioception. Thus, D correctly identifithe spinotectal tract, making it the right answer.
Question 4 of 5
Which of the following tracts has descending autonomic fibers providing a pathway by which the hypothalamus can control the sympathetic and sacral parasympathetic outflow:
Correct Answer: D
Rationale: Reticulospinal tracts. The reticulospinal tracts, from the brainstem reticular formation, include autonomic fibers from the hypothalamus, regulating sympathetic (T1-L2) and parasympathetic (S2-S4) outflow for functions like heart rate and bladder control. Choice A (rubrospinal) is for motor tone. Choice B (tectospinal) is for head reflexes. Choice C (vestibulospinal) is for posture. Thus, D correctly identifithe autonomic role, making it correct.
Question 5 of 5
Which of the following tracts has descending autonomic fiber providing a pathway by which the hypothalamus can control the sympathetic sacral parasympathetic outflow:
Correct Answer: D
Rationale: Reticulospinal tracts. The reticulospinal tracts from the brainstem, influenced by the hypothalamus, regulate autonomic functions like sympathetic (T1-L2) and sacral parasympathetic (S2-S4) outflow. Choice A (rubrospinal) is motor tone. Choice B (tectospinal) is head reflexes. Choice C (vestibulospinal) is posture. Thus, D correctly identifithe autonomic pathway, making it correct.