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Heart beat is affected by ______ and ______. size and shape muscle and fat hair color and eye color male and female
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1 vote
Heart beat is affected by ______ and ______.

size and shape

muscle and fat

hair color and eye color

male and female

User Mclaughj
by
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2 Answers

5 votes
Primary factors include blood volume reflexes, autonomic innervation, and hormones. Secondary factors include extracellular fluid ion concentration, body temperature, emotions, sex, and age.
User Andy Till
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5.3k points
4 votes

Answer:

I believe it´s muscle and fat......

Step-by-step explanation:

User RealNapster
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5.8k points
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