ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
A person who sees a lion outside will likely have an increase in heart rate. Why?
Correct Answer: B
Rationale: Seeing a lion triggers the sympathetic nervous system, which stimulates cardiac muscle to increase heart rate (fight-or-flight). Parasympathetic slows heart rate.
Question 2 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 3 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 4 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.
Question 5 of 5
A bundle of axons in the central nervous system is a:
Correct Answer: D
Rationale: A tract is a bundle of axons in the CNS (e.g., corticospinal tract). Nerves are PNS axon bundles, cell bodies are soma, and neuroglia support.