ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
Flat neuroglial cell that surrounds cell bodies of peripheral nervous system ganglia to provide structural support and regulate the exchange of material between a neuronal cell body and interstitial fluid.
Correct Answer: B
Rationale: Satellite cells are flat neuroglia that encase PNS ganglion cell bodies, providing support and regulating nutrient exchange. Dendrites are neuron parts, depression is unrelated, and tracts are CNS axon bundles.
Question 2 of 5
The portion of the brain and spinal cord containing neuronal cell bodies, dendrites, and unmyelinated axons.
Correct Answer: A
Rationale: Gray matter consists of neuronal cell bodies, dendrites, and unmyelinated axons in the CNS. White matter is myelinated axons, cerebral cortex is a gray matter region, and synaptic vesicles store neurotransmitters.
Question 3 of 5
An electrical signal that propagates along the membrane of a muscle fiber.
Correct Answer: D
Rationale: A muscle action potential is the electrical signal in muscle fibers, triggering contraction. Interneurons connect neurons, Wallerian degeneration is axon breakdown, and stimulus is an activator.
Question 4 of 5
Hormone secreted by the adrenal medulla that produces actions similar to those that result from sympathetic stimulation.
Correct Answer: A
Rationale: Epinephrine, secreted by the adrenal medulla, enhances sympathetic responses (e.g., fight-or-flight). Norepinephrine is similar but listed separately, ACh and dopamine are neurotransmitters.
Question 5 of 5
The study of the normal functioning and disorders of the nervous system.
Correct Answer: C
Rationale: Neurology is the study of nervous system function and disorders. Nerve is a structure, oligodendrocytes are glia, and parasympathetic is a system.