Describe the basic anatomy of a spinal nerve plexus
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Axons from the anterior rami of spinal nerves do not go directly to the body structures they supply. Instead, they form networks called plexuses on both the left and right sides of the body by joining with various numbers of axons from anterior rami of adjacent spinal nerves. Thus, the nerves that emerge from a plexus and innervate body organs contain nerve fibers from multiple spinal nerves.
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