ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
Which of the following is NOT true of the resting potential of a neuron?
Correct Answer: C
Rationale: At resting potential (~-70 mV), the inside is negatively charged with abundant potassium (K+), not sodium (Na+), which is outside. The membrane is polarized, and the outside is positive.
Question 2 of 5
The ventral root of the spinal cord contains fibers and the dorsal root of the spinal cord contains fibers.
Correct Answer: B
Rationale: Ventral roots carry motor (efferent) fibers to muscles; dorsal roots carry sensory (afferent) fibers to the CNS.
Question 3 of 5
A ridge or bump of the cerebral cortex is called a
Correct Answer: B
Rationale: A gyrus is a ridge on the cerebral cortex. Fissures and sulci are grooves, and the insula is a hidden lobe.
Question 4 of 5
What cerebral area is important for muscular control of speech?
Correct Answer: A
Rationale: Broca’s area (frontal lobe) controls the motor aspects of speech production. Wernicke’s is for comprehension.
Question 5 of 5
Which of the following is NOT a component of the brainstem?
Correct Answer: A
Rationale: The brainstem includes midbrain, pons, and medulla oblongata. The diencephalon (thalamus, hypothalamus) is above the brainstem.