ATI RN
Nervous System Questions Questions
Question 1 of 5
The narrow gap at a chemical synapse that separates the axon terminal of one neuron from another neuron or muscle fiber and across which a neurotransmitter diffuses to affect the postsynaptic cell.
Correct Answer: B
Rationale: The synaptic cleft is the gap at a chemical synapse where neurotransmitters diffuse to the postsynaptic cell. Ganglion is a cell body cluster, neurotransmitter is a chemical, and synaptic vesicles store it.
Question 2 of 5
Abnormal fluid accumulation in the lungs would be detected during breathing by
Correct Answer: B
Rationale: Auscultation (listening with a stethoscope) detects abnormal lung sounds (e.g., crackles) from fluid accumulation. Percussion assesses density, inspection is visual, and palpation is touch.
Question 3 of 5
In the brain, this surrounds the white matter.
Correct Answer: C
Rationale: Gray matter (neuronal cell bodies, dendrites) surrounds white matter (axons) in the brain’s cortex. Ganglia are PNS, and dendrites are neuron parts.
Question 4 of 5
Motor neurons from the hypoglossal (XII) nerve innervate the tongue. Destruction of these motor neurons due to traumatic injury would result in the loss of a(n)
Correct Answer: A
Rationale: Hypoglossal (CN XII) motor neurons innervate tongue muscles (effectors). Their destruction impairs tongue movement, not sensory, integration, or CNS pathways.
Question 5 of 5
Which part of a neuron conducts nerve impulses to another cell?
Correct Answer: A
Rationale: Synaptic ends (terminals) release neurotransmitters to signal another cell, concluding the axon’s impulse conduction. Axon conducts, dendrites receive, and cell body processes.