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Which of the following are examples of extrinsic influences on heart rate?

1. Parasympathetic branch of the autonomic nervous system
2. SA node
3. Sympathetic branch of the autonomic nervous system
4. Hormones like epinephrine (adrenaline)
5. AV node

User JHumphrey
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1 Answer

4 votes

Answer:

The answers should be 1, 3, and 4.

User Shoshin Nikita
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