ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
What mechanism helps keep the neuron membrane at its resting potential?
Correct Answer: B
Rationale: The sodium-potassium pump (active transport) maintains resting potential by pumping 3 Na+ out and 2 K+ in, countering ion leakage.
Question 2 of 5
The white matter of the spinal cord
Correct Answer: A
Rationale: White matter contains ascending (sensory) and descending (motor) tracts. Cell bodies and reflex centers are in gray matter.
Question 3 of 5
The primary motor area of the cerebrum is located in the lobe.
Correct Answer: A
Rationale: The primary motor area (precentral gyrus) in the frontal lobe controls voluntary skeletal muscle movement.
Question 4 of 5
Masses of gray matter deep in the cerebrum that help integrate motor commands are the
Correct Answer: C
Rationale: Basal nuclei (e.g., basal ganglia) are gray matter structures deep in the cerebrum that refine motor commands.
Question 5 of 5
Vital centers for regulating heartbeat, breathing, and blood pressure are located in the
Correct Answer: D
Rationale: The medulla oblongata houses vital centers for heart rate, respiration, and blood pressure.