Question
97. Which of the following will directly increase contractility
a. Increase in heart rate
b. Circulating epinephrine
c. Decrease in heart rate
d. Circulating acetylcholine

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97. Which of the following will directly increase contractility a. Increase in heart rate b. Circulating epinephrine c. Decrease in heart rate d. Circulating acetylcholine

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Human Anatomy

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