Which Is True When Your Sympathetic Nervous System Is More

question 130

Multiple Choice

Which is true when your sympathetic nervous system is more active?

• A)The SA node depolarizes more rapidly.
• B)The myocardium repolarizes more frequently during one minute.
• C)More Ca₂₊ becomes available and causes more forceful heart contractions.
• D)Norepinephrine is stimulating the heart.
• E)All of the above are true.

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The faculty of reasoning and understanding objectively, especially with regard to abstract or academic matters.