ATI RN
Questions About the Nervous System Questions
Question 1 of 5
What forms the grey matter of nervous system?
Correct Answer: B
Rationale: Grey matter consists primarily of neuronal cell bodies (B), which contain nuclei and process information. Axons (A) and dendrites (D) contribute to white and grey matter, but cell bodies dominate grey matter. Neuralgia (C) is a condition, not a structure.
Question 2 of 5
All of the following are motor areas in the brain, except:
Correct Answer: D
Rationale: The premotor area (A, likely a typo), association motor areas (B, e.g., supplementary motor area), and frontal motor areas are motor regions. The temporal lobe (C) has some motor roles (e.g., speech), but the occipital lobe (D) is primarily visual, not motor. D is the exception.
Question 3 of 5
Receptive aphasia:
Correct Answer: C
Rationale: Receptive aphasia (Wernicke’s) involves the posterior superior temporal gyrus (near Sylvian fissure, B partial), not frontal lobe (A, Broca’s). Patients don’t comprehend commands (C, correct), unlike motor aphasia (expression issue). Parietal infarction (D) may contribute, but temporal is key. C is correct.
Question 4 of 5
The fastest conduction of impulses occurs in nerves of type:
Correct Answer: B
Rationale: A-alpha fibers (B) are the fastest (70-120 m/s), myelinated, and large-diameter, used in motor and proprioception. C fibers (A) are slow (0.5-2 m/s), unmyelinated. A-beta (C) and A-delta (D) are intermediate. B is correct.
Question 5 of 5
The following is true about the frontal lobe of the brain:
Correct Answer: B
Rationale: The frontal lobe controls behavior (B, prefrontal), not taste (A, temporal), has motor areas (C, partial), and memory loss (D) is more temporal/hippocampal. B is most accurate.