ATI RN
Questions About the Nervous System Questions
Question 1 of 5
Concerning cerebellar disorders:
Correct Answer: C
Rationale: Cerebellar disorders typically cause hypotonia (not increased tone, ruling out A), reduced reflexes (not exaggerated, ruling out B), and a wide-based, ataxic gait (C) due to impaired coordination. Consciousness is not lost (D) unless secondary complications arise, as the cerebellum does not govern consciousness.
Question 2 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 3 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 4 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.
Question 5 of 5
Aside from the nervous system, which other organ system develops out of the ectoderm?
Correct Answer: C
Rationale: The ectoderm gives rise to the nervous system and the integumentary system (skin, hair, nails) (C). The digestive (A) and respiratory (B) systems primarily develop from the endoderm, while the urinary (D) system arises from the mesoderm and endoderm. C is correct.