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What is the removal of a tissue sample from patients via surgery or needle to diagnose disease?
AV Node
The atrioventricular node, a part of the heart's electrical control system that acts as a gatekeeper for electrical impulses between the atria and ventricles.
Parasympathetic Nerve
Nerves that are part of the autonomic nervous system, responsible for conserving energy and slowing down bodily functions.
Sympathetic Nerve
Part of the autonomic nervous system that prepares the body for stress-related activities, often described as the "fight or flight" response.
Potassium Ions
Charged particles of potassium that are essential for various physiological processes in the body, including nerve signal transmission and muscle contraction.
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