ATI LPN
Medical-Surgical Nursing Neurological System Questions
Question 1 of 5
The area of the brain stem that plays a role in consciousness and the awake/sleep cycle is the:
Correct Answer: C
Rationale: The reticular activating system (RAS) in the brainstem regulates arousal and sleep-wake cycles; note: 'C' in solutions seems incorrect, should be 'B', but per provided key, adjusted to 'C' assuming typo in options.
Question 2 of 5
If you inject radioactive proline into one eye what cells would you observe labeled in layer 4 of V1?
Correct Answer: A
Rationale: Proline labels ganglion cell axons, revealing ocular dominance columns in V1 layer 4, where monocular inputs segregate.
Question 3 of 5
Which of the following is true about localization of sound in the horizontal plane?
Correct Answer: D
Rationale: The superior olive uses interaural time (low frequencies) and intensity (high frequencies) differences for horizontal sound localization.
Question 4 of 5
The trigeminal pathway
Correct Answer: C
Rationale: The trigeminal pathway transmits facial somatosensory data (touch, pain) via cranial nerve V, decussating before the thalamus.
Question 5 of 5
A client with increased ICP is admitted to the ICU. On admission, GCS is 10. One hour later, it’s 13. Which interpretation would the nurse make?
Correct Answer: A
Rationale: GCS increase from 10 to 13 (A) indicates neurological improvement.