Which of the following structures is innervated almost entirely by the sympathetic, but not the parasympathetic, division of the autonomic nervous system?
A)Blood vessels
B)Gastrointestinal tract
C)Heart
D)Reproductive organs
E)Urinary bladder

Question

Quizplus · Accepted Answer

Blood vessels are innervated almost entirely by the sympathetic division of the autonomic nervous system, which regulates vasoconstriction and vasodilation to control blood flow and blood pressure. The parasympathetic division does not play a significant role in the regulation of blood vessels. The other structures listed are innervated by both the sympathetic and parasympathetic divisions, although the balance of their influence may vary depending on the specific conditions or stimuli.

Which of the Following Structures Is Innervated Almost Entirely by the Sympathetic