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.

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

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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 auto…

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