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Upon vigorous exercise, your heart rate increases to 200 beats per minute to supply sufficient oxygen to muscles. Which is responsible for this regulation of the heart rate?

Upon vigorous exercise, your heart rate increases to 200 beats per minute to supply sufficient oxygen to muscles. Which is responsible for this regulation of the heart rate?
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Upon vigorous exercise, your heart rate increases to 200 beats per minute to supply sufficient oxygen to muscles. Which is responsible for this regulation of the heart rate?

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User Bustergun
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2 Answers

6 votes

Answer:

B

Step-by-step explanation:

I got it correct

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User Ratatouille
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7.6k points
1 vote
sinoatrial node i am 100 percent sure thats the correct answer
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User Xiaojing
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