ATI LPN
Medical-Surgical Nursing Neurological System Questions
Question 1 of 5
A patient with left-sided weakness that started 60 minutes earlier is admitted to the emergency department and diagnostic tests are ordered. Which test should be done first?
Correct Answer: C
Rationale: CT scan rules out hemorrhage before thrombolytics in acute stroke (<3 hours). Others follow. [Level: Analysis]
Question 2 of 5
Which type of neuron carries signals from sensory receptors to the central nervous system (CNS)?
Correct Answer: C
Rationale: Sensory (afferent) neurons transmit from receptors to CNS. Motor go to effectors, interneurons connect within. [Level: Knowledge]
Question 3 of 5
Schwann cells are responsible for the production of:
Correct Answer: B
Rationale: Schwann cells myelinate PNS axons, speeding conduction. Others are unrelated. [Level: Knowledge]
Question 4 of 5
Which phase of the action potential involves the efflux of potassium ions?
Correct Answer: D
Rationale: Repolarization occurs as K+ exits, restoring the negative charge. [Level: Knowledge]
Question 5 of 5
What type of synapse involves the direct flow of ions and electrical current between adjacent neurons?
Correct Answer: B
Rationale: Electrical synapses enable rapid, direct ion transmission via gap junctions. [Level: Knowledge]