Complicated interlacing of the ventral rami form networks called nerve plexus. Thecrisscrossing of the nerve fibers from the various spinal nerves is advantageous because________.
A) having several nerve fibers unite enhances motor function
B) viruses that infect us by moving through PNS nerves are prevented entry to the CNS
C) having several nerve fibers unite enhances sensory function
D) injury to any single spinal nerve will be less damaging as there is less chance of total loss of innervation to any particular organ

Question

Quizplus · Accepted Answer

The crisscrossing of nerve fibers from various spinal nerves in nerve plexus reduces the chance of total loss of innervation to any particular organ in case of injury to a single spinal nerve, making option D the correct answer. While having several nerve fibers unite can enhance both motor and sensory function, this is not specified in the given context. Option B is also irrelevant to the given context.

Complicated Interlacing of the Ventral Rami Form Networks Called Nerve