Question

18 of 23 concepts completed
multiple choice question
which letter corresponds to the preganglionic neuron in the figure?
ob
oa
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Explanation:

Preganglionic neurons are the first - order neurons in the autonomic nervous system. They originate from the central nervous system (in this case, likely the spinal cord as part of the autonomic nervous system pathway shown). In the given diagram, neuron A is the one that starts from the central nervous system (the structure on the left which resembles the spinal cord) and goes towards the ganglion. Neuron B is the post - ganglionic neuron as it extends from the ganglion to the target organ (the heart).

Answer:

A