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there are nevers that affect your heart rate there are two

  • Sympathetic and parasympathetic (vagus).

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13y ago

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How do sympathetic and parasympathetic nerves affect a pacemaker?

Sympathetic nerves increase the heart rate by releasing norepinephrine, while parasympathetic nerves decrease the heart rate by releasing acetylcholine. This affects the pacemaker by altering its firing rate and influencing overall heart rhythm.


How does depressants affect the heart rate?

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What nerves send electrical signals to your heart?

The autonomic nervous system consists of the sympathetic and parasympathetic branches that regulate the heart rate. The sympathetic nerves release neurotransmitters such as norepinephrine to increase heart rate, while the parasympathetic nerves release acetylcholine to decrease heart rate.


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The sympathetic nerves speed up the heart rate, while the parasympathetic nerves slow it down.


Does taking a deep breath and holding it affect your heart rate?

No, 'fraid not. Your nerves connect with the brain and the heart structure. So the only time when you heart rate changes is when your brain tells it to. For example: when your heart skips a beat (believe it or not, it can actually happen!). Hope this helped! :)


How does laughing affect your heart rate?

It increases your heart rate.


What two nerves affect the rate of the heartbeat?

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Yes, excercise does affect your heart rate. It makes your heart faster of the oxygen and things.


What two nerves affect the rate of the heartbeat how are they affected?

sinoatrial node


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How does heart rate affect the adrenal glands?

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