ATI LPN
Neurological System Questions Questions
Question 1 of 9
Two days post-intracranial surgery, urine output drops to 150 mL/day, specific gravity 1.035, sodium 129 mEq/L, low osmolarity. This suggests?
Correct Answer: C
Rationale: SIADH (C): low sodium, high urine specific gravity, low output post-surgery.
Question 2 of 9
Which plexus is responsible for innervating the muscles and skin of the lower limb?
Correct Answer: C
Rationale: The sacral plexus (L4-S4) innervates the lower limb (e.g., sciatic nerve). [Level: Knowledge]
Question 3 of 9
A client on azathioprine post-kidney transplant asks why periodic CBCs are needed. The nurse explains it’s critical to report which of the following?
Correct Answer: A
Rationale: Azathioprine causes thrombocytopenia (text note); easy bruising (A) indicates low platelets.
Question 4 of 9
The primary taste area is in the __________:
Correct Answer: A
Rationale: The gustatory cortex is near the insula, deep in the lateral sulcus. [Level: Knowledge]
Question 5 of 9
Reflex arcs that involve the spinal cord without direct involvement of the brain are classified as:
Correct Answer: A
Rationale: Somatic reflexes involve spinal cord and skeletal muscles, not brain. [Level: Knowledge]
Question 6 of 9
Which photoreceptor responds to the broadest spectrum of wavelengths of light?
Correct Answer: D
Rationale: Red cones have the broadest spectral sensitivity range. TMP13 p. 652
Question 7 of 9
Which insulin does the nurse administer intravenously to a patient with a blood glucose of 240 mg/dL?
Correct Answer: C
Rationale: Only regular insulin (C) is safe for IV use due to its short action and compatibility.
Question 8 of 9
The spinal cord is protected by the:
Correct Answer: C
Rationale: The vertebrae encase and protect the spinal cord. [Level: Knowledge]
Question 9 of 9
Which neuroglial cells are involved in the production and circulation of cerebrospinal fluid in the central nervous system?
Correct Answer: D
Rationale: Ependymal cells line ventricles and produce/circulate CSF in the CNS. [Level: Knowledge]