ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
What gives white matter its white color?
Correct Answer: D
Rationale: White matter’s white color comes from myelin, the lipid-rich sheath around axons, reflecting light. Dendrites and cell bodies are gray matter, and Nissl bodies are in cell bodies.
Question 2 of 5
Identify a classification of neurons by structure.
Correct Answer: C
Rationale: Unipolar neuron is a structural classification (one process). Interneuron, motor, and sensory are functional types.
Question 3 of 5
Nerve signal transmission over myelinated axons is called
Correct Answer: A
Rationale: Saltatory conduction is impulse jumping between nodes of Ranvier on myelinated axons, speeding transmission.
Question 4 of 5
The spinal cord begins outside the and ends at the
Correct Answer: B
Rationale: The spinal cord begins at the foramen magnum (skull base) and ends at L1-L2 (conus medullaris), not sacrum or L4.
Question 5 of 5
Identify the bridge of white matter that connects the right and left cerebral hemispheres.
Correct Answer: A
Rationale: The corpus callosum is the white matter tract connecting the cerebral hemispheres for communication.