Which of the Following Descriptions of the Autonomic Innervation of the Cardiovascular

question 73

Multiple Choice

Which of the following descriptions of the autonomic innervation of the cardiovascular system is FALSE?

• A)Both sympathetic and parasympathetic neurons innervate the SA node.
• B)Sympathetic activity increases cardiac output, whereas parasympathetic activity decreases cardiac output.
• C)Only sympathetic neurons innervate smooth muscle in veins.
• D)Both sympathetic and parasympathetic neurons innervate smooth muscle in arterioles.
• E)Only sympathetic neurons provide significant innervation of the contractile cells of the heart.