Question

fibers that enter and leave the sympathetic trunks without synapsing form structures called ________. a) splanchnic nerves b) gray rami communicantes c) spinal nerves d) white rami communicantes

Explanation:

Splanchnic nerves are composed of preganglionic sympathetic fibers that pass through the sympathetic trunk ganglia without synapsing. Gray rami communicantes contain postganglionic fibers. Spinal nerves are a mixed of sensory and motor fibers. White rami communicantes contain preganglionic fibers that may synapse in the sympathetic trunk.

Answer:

A. splanchnic nerves