Question

What describes the basic anatomy of a spinal nerve plexus?

A)Central nerve bundle surrounded by multiple branches.
B)Convergence of sensory and motor neurons into a single nerve.
C)Complex network of intersecting spinal nerves with mixed functions.
D)Linear arrangement of nerve fibers within a protective sheath.

Answer 1

The anatomy of a spinal nerve plexus is described as a complex network of intersecting spinal nerves, each containing sensory and motor axons, and featuring a dorsal root ganglion for sensory neuron cell bodies.

Step-by-step explanation:

The basic anatomy of a spinal nerve plexus is best described as a complex network of intersecting spinal nerves with mixed functions (Option C). Spinal nerves contain both sensory and motor axons that merge at different levels of the spinal cord to form plexuses. Each spinal nerve splits into dorsal and ventral roots, where the dorsal root contains sensory neuron axons and the ventral root contains motor neuron axons. The dorsal root ganglion is an enlargement that contains the cell bodies of sensory neurons. A spinal nerve plexus reorganizes these axons providing a pathway for them to connect to specific regions of the body. This organization allows for a complex control and sensory feedback system.