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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology Kinesiology
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mamafay mamafay
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6 years ago
At the beginning of exercise, the increase in heart rate is due to
 
 a. a withdrawal of vagal activity c. both A and B
  b. an increase in sympathetic activity
  d. none of the choices
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jajikimjajikim
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6 years ago
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mamafay Author
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6 years ago
this is exactly what I needed
jamiebonf99
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Yesterday
Helped a lot
vanna2014
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2 hours ago
Thanks for your help!!
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