ATI LPN
Medical-Surgical Nursing Neurological System Questions
Question 1 of 5
An action potential:
Correct Answer: A
Rationale: An action potential, a rapid depolarization and repolarization, is the mechanism of nerve impulse propagation along axons.
Question 2 of 5
Using anatomical points of reference, the cerebellum is to the cerebrum and to the pons.
Correct Answer: B
Rationale: The cerebellum is posterior (behind) the cerebrum and ventral (below) the pons in standard anatomical orientation.
Question 3 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 4 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 5 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.