ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
Concerning vision:
Correct Answer: C
Rationale: Cones (not 'cons,' likely a typo) handle photopic (daylight) vision, not scotopic (rods do, ruling out A). Intraocular pressure is typically 10-21 mmHg (B is slightly off), myopia is corrected with concave lenses (C is correct), and the light reflex is mediated by the midbrain, not cortex (D). C is the correct answer.
Question 2 of 5
Which of the following reflexes is polysynaptic:
Correct Answer: C
Rationale: The knee jerk (A), ankle jerk (B), and supinator reflex (D) are monosynaptic stretch reflexes. The abdominal reflex (C) is polysynaptic, involving interneurons and cutaneous input. C is correct.
Question 3 of 5
Pyramidal diseases is characterized by:
Correct Answer: C
Rationale: Pyramidal (upper motor neuron) disease causes weakness (C), spasticity, and hyperreflexia, not tremor (A, basal ganglia), wasting (B, lower motor), or hypotonia (D, cerebellar). C is correct.
Question 4 of 5
A 70 year old man suddenly developed loss of consciousness and right sided upper and lower limb weakness. On clinical examination, the following is true:
Correct Answer: D
Rationale: This suggests a left hemispheric stroke (e.g., MCA), causing right-sided weakness and upper motor neuron signs: absent abdominal reflexes (D, correct), exaggerated reflexes on the right (not both, B), and possible left sensory loss (not both, C). Power isn’t lost bilaterally (A). D fits best.
Question 5 of 5
Which lobe of the cerebral cortex is responsible for generating motor commands?
Correct Answer: D
Rationale: The frontal lobe (D) contains the primary motor cortex (Brodmann area 4), responsible for voluntary motor commands. The temporal (A) processes auditory and memory, parietal (B) sensory integration, and occipital (C) vision. D is correct.