Considering the distribution of sympathetic and parasympathetic fibers in the peripheral nervous system, damage to which of the following nerves would have the greatest impact on blood vessel walls?

Question

Quizplus · Accepted Answer

Sympathetic fibers, which significantly influence blood vessel walls by causing vasoconstriction or vasodilation, predominantly originate from the thoracic nerves. The sympathetic nervous system plays a crucial role in regulating blood flow and blood pressure, and thoracic nerves are a major component of this system.

Considering the Distribution of Sympathetic and Parasympathetic Fibers in the Peripheral