Autonomic pathways through thorax, abdomen, and pelvis

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SAMPLE QUESTION

An anatomical tracing study follows an autonomic motor axon from a neuron in the T8 lateral horn to the sympathetic trunk. The axon has not yet synapsed with another neuron.

Autonomic pathways through thorax, abdomen, and pelvis

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Which description correctly identifies this axon and its route from the spinal cord to the trunk?