Final answer:
Nerve plexuses are networks of intersecting nerves found in cervical, brachial, lumbar, and sacral regions, functioning to route sensory and motor information to various body parts. They reorganize axons from spinal nerves for different systemic routes, with each plexus serving specific body areas.
Step-by-step explanation:
Nerve plexuses are likely to be found in the cervical, brachial, lumbar, and sacral regions of the body. These plexuses are networks of intersecting nerves arising from spinal nerves and are crucial for routing sensory and motor information between the central nervous system and various parts of the body. They contain fibers that serve both sensory functions, providing feeling to cutaneous and peripheral sensory surfaces, and motor functions, facilitating movement through motor neurons.
The primary function of nerve plexuses is to reorganize the axons from spinal nerves to allow different routes for the systemic nerves. For example, the cervical plexus supplies nerves to the posterior head, neck, and diaphragm, while the brachial plexus covers the arm, the lumbar plexus the anterior leg, and the sacral plexus the posterior leg.
A plexus is a general term for a network of fibers, which can refer to neural or vascular structures. In the peripheral nervous system (PNS), nerves are bundles of axons surrounded by connective tissue and serve to connect the central nervous system to limbs and organs.