ATI RN
Nervous System Multiple Choice Questions and Answers Questions
Question 1 of 5
Degeneration of the portion of the axon and myelin sheath of a neuron distal to the site of injury.
Correct Answer: D
Rationale: Wallerian degeneration is the breakdown of the axon and myelin distal to an injury in the PNS. Astrocytes are glia, motor neurons are cells, and action potentials are signals.
Question 2 of 5
Nerves that directly innervate voluntary muscles are part of the
Correct Answer: B
Rationale: The somatic nervous system innervates voluntary skeletal muscles. Autonomic controls involuntary muscles/glands, CNS is brain/spinal cord, and enteric governs digestion.
Question 3 of 5
A change in the chemicals that enter the nose would be received by
Correct Answer: B
Rationale: Sensory receptors (e.g., olfactory receptors in the nose) detect chemical changes (odors). Enteric plexuses control digestion, cranial nerves transmit signals, and neuroglia support.
Question 4 of 5
Which types of CNS neuroglia are the most similar in appearance?
Correct Answer: C
Rationale: Astrocytes (star-shaped) and oligodendrocytes (fewer processes) are similar in having branching processes, unlike microglia (small, mobile) or ependymal cells (ciliated, lining ventricles).
Question 5 of 5
Cells support and nourish cells that send electrical signals throughout the body.
Correct Answer: B
Rationale: Neuroglia (e.g., astrocytes, oligodendrocytes) support and nourish neurons, which send electrical signals. Effectors respond, and receptors detect stimuli.