ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
Which neuronal feature is described according to function?
Correct Answer: B
Rationale: The cell body (soma) houses the nucleus and organelles, supporting neuron function. Dendrites receive signals, and axons send them.
Question 2 of 5
Many cardiac arrhythmias are due to improper regulation of the autonomic nervous system (ANS). Which of the following could be a cause of cardiac arrhythmia that arises from the ANS?
Correct Answer: C
Rationale: The vagus nerve (CN X, parasympathetic) slows heart rate; its failure can cause arrhythmias (e.g., tachycardia). Accessory nerve (XI) is motor, gap junctions are structural, and somatic neurons don’t innervate the heart.
Question 3 of 5
Integration of information from sensory neurons can happen in
Correct Answer: C
Rationale: The brain (CNS) integrates sensory information for processing and response. Peripheral nerves transmit, myelin sheaths insulate, and neuroglia support.
Question 4 of 5
A channel that opens in response to the binding of a molecule like a neurotransmitter is known as a
Correct Answer: C
Rationale: A ligand-gated channel opens when a molecule (e.g., neurotransmitter) binds, as in synapses. Mechanically gated respond to physical stimuli, leakage are always open, and voltage-gated to voltage.
Question 5 of 5
The three cutaneous nerves that pierce the deep fascia at the middle of the posterior border of the sternocleidomastoid include all the following, EXCEPT the
Correct Answer: D
Rationale: The lesser occipital, greater auricular, and transverse cervical nerves (all from the cervical plexus, C2-C4) pierce the deep fascia at the posterior border of the sternocleidomastoid to supply the neck and scalp. The supraclavicular nerve (C3-C4) emerges lower, near the clavicle, and does not pierce at this midpoint, making it the exception.