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How is the heart rate controlled by the nervous system in an intact organism?

Answer 1

Your heart is involuntary, which means that it will always keep pumping until you're dead. You can't tell your heart to beat faster or slower, it does it by itself.

The nervous system controls everything, including your involuntary systems.

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Answer 2

Sophia Atencio

The heart rate is controlled by the autonomic nervous system, specifically through the actions of the sympathetic and parasympathetic branches. The sympathetic nervous system increases heart rate through the release of norepinephrine, while the parasympathetic nervous system decreases heart rate through the release of acetylcholine. These two systems work in balance to regulate heart rate based on the body's needs and external stimuli.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.