ATI RN
Autonomic Nervous System NCLEX Questions Questions
Question 1 of 5
An extension of a neuron that conducts a nerve impulse toward a synapse; may be myelinated or unmyelinated.
Correct Answer: A
Rationale: A nerve fiber (axon) conducts impulses toward a synapse. Myelin sheath insulates, axon is a synonym, and effectors are targets.
Question 2 of 5
Movement in which a part of the body moves inferiorly.
Correct Answer: D
Rationale: Depression is the anatomical movement of a body part downward (e.g., shoulder). Action potential is a signal, astrocytes are glia, and interneurons are neurons.
Question 3 of 5
Expanded distal end of an axon terminal that contains synaptic vesicles.
Correct Answer: A
Rationale: Synaptic end bulbs are the expanded ends of axon terminals containing synaptic vesicles. Axon terminals are broader, vesicles are contents, and neurotransmitter is a chemical.
Question 4 of 5
The nerve cell that is activated by the release of a neurotransmitter from another neuron and carries nerve impulses away from the synapse.
Correct Answer: B
Rationale: The postsynaptic neuron receives neurotransmitters and propagates impulses away from the synapse. ANS is a system, axon is a neuron part, and depression is a movement.
Question 5 of 5
If a postsynaptic cell receives EPSPs but not enough to reach the threshold, which of the following will happen?
Correct Answer: B
Rationale: If excitatory postsynaptic potentials (EPSPs) don’t reach the threshold (~-55 mV), no action potential is triggered due to the all-or-none principle. Action potentials don’t vary in strength or number here.