ATI LPN
Medical Surgical Nursing Neurological Disorders Questions
Question 1 of 5
Like other sensory systems, the somatosensory system has a descending component that functions to regulate the overall sensitivity of the system. Which of the following selections best describes the function of the corticofugal signals transmitted from the somatosensory cortex downward to the thalamus and dorsal column nuclei?
Correct Answer: A
Rationale: Corticofugal signals modulate signal intensity perception. TMP13 pp. 610-611
Question 2 of 5
Which substance is responsible for the umami taste sensation?
Correct Answer: D
Rationale: Glutamate elicits the umami taste sensation. TMP13 p. 686
Question 3 of 5
Which molecules move from the endolymph into the stereocilia and depolarize the hair cell?
Correct Answer: D
Rationale: Potassium ions from endolymph enter stereocilia, depolarizing hair cells. TMP13 p. 677
Question 4 of 5
Olfactory information transmitted to the orbitofrontal cortex passes through which thalamic nucleus?
Correct Answer: A
Rationale: Olfactory signals reach the orbitofrontal cortex via the dorsomedial thalamic nucleus. TMP13 p. 691
Question 5 of 5
The primary auditory cortex lies primarily in which lobe of the cerebral cortex?
Correct Answer: D
Rationale: The primary auditory cortex is mainly in the temporal lobe. TMP13 p. 680