Which of the Following Statements Are True of the Nervous

question 4

Multiple Choice

Which of the following statements are true of the nervous regulation of heart rate (Select all that apply) ?

• A)The cardiac centers are in the medulla of the brain.
• B)Only the sympathetic nervous system has nerves to the heart muscle.
• C)Heart rate changes in response to changes in blood pressure or blood gas levels.
• D)Sympathetic nerve fibers to the heart are part of the vagus nerves.
• E)The neurotransmitter norepinephrine decreases heart rate.f.The heart generates its own beat,but the neurotransmitter acetylcholine can increase the rate.

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