ATI LPN
Neurological Questions Questions
Question 1 of 5
The sciatic nerve, the longest nerve in the human body, is derived from which plexus?
Correct Answer: D
Rationale: The sciatic nerve arises from the sacral plexus (L4-S3). [Level: Knowledge]
Question 2 of 5
The parasympathetic chain ganglia are located:
Correct Answer: C
Rationale: Parasympathetic ganglia are near or within target organs, unlike sympathetic chain ganglia. [Level: Knowledge]
Question 3 of 5
Identify the three basic parts of a neuron:
Correct Answer: A
Rationale: A neuron has a cell body (soma), dendrites, and axon. Myelin and neuroglia are accessories. [Level: Knowledge]
Question 4 of 5
What mechanism helps keep the neuron membrane at its resting potential?
Correct Answer: B
Rationale: The Na+/K+ pump maintains resting potential (-70 mV) by pumping Na+ out, K+ in. [Level: Knowledge]
Question 5 of 5
The ventral root of the spinal cord contains _____ fibers and the dorsal root of the spinal cord contains _____ fibers:
Correct Answer: B
Rationale: Ventral root: motor (efferent); dorsal root: sensory (afferent). [Level: Knowledge]