Describe the structure of a nerve plexus and explain the advantage of this structure to its function
What will be an ideal response?
The anterior rami of the cervical, lumbar, and sacral spinal nerves come together and merge to form complicated networks of nerves called nerve plexuses. The axons of each spinal nerve cross over one another to enter different nerve plexuses. For this reason, the muscles supplied by a single branch of a nerve plexus are often served by two or more different spinal nerves. This works to our advantage, as it means that injury to one spinal nerve does not completely cut off motor or sensory innervation to that body part.
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