ATI RN
NCLEX Questions for Neurological System Questions
Question 1 of 5
The action potential pattern that appears on the oscilloscope screen is caused by rapid ________.
Correct Answer: A
Rationale: The action potential pattern observed on an oscilloscope is caused by rapid changes in membrane polarity. During an action potential, the membrane potential depolarizes (becomes more positive) as sodium ions rush into the neuron, followed by repolarization (returning to negative) as potassium ions exit. These polarity changes are essential for the propagation of nerve impulses and are a hallmark of neural activity.
Question 2 of 5
Each cerebral hemisphere is divided into ________ lobes, ________ of which have the same name as the bone over them.
Correct Answer: A
Rationale: Each cerebral hemisphere is divided into four lobes: the frontal, parietal, temporal, and occipital lobes. Three of these lobes (frontal, parietal, and temporal) share their names with the bones of the skull that overlie them. The occipital lobe is named after the occipital bone. Therefore, four, three is the correct answer as it accurately describes the division and naming of the cerebral lobes.
Question 3 of 5
Immediately after an action potential is propagated, which one of the following ions rapidly diffuses out of the cell into the tissue fluid:
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
The vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the:
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
An 18 year-old college freshman presents to the emergency room for evaluation of fever, headache, and neck stiffness. On physical examination, the patient is resting quietly and has a flushed face. His vital signs are as follows: temperature, 104 F; pulse, 110 bpm; and BP, 105/70. He has no rashes. During the physical examination, you flex the patient's neck and his hips and knees flex in response, indicating a meningeal irritation. The name of this positive sign is:
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.