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2024-04-02 13:17:34

Cardiac Autonomic Control: Understanding the Rhythms of the Heart

The sympathetic division of the autonomic nervous system acts as an accelerator, stimulating the heart to beat faster and with greater force. When the body perceives a threat or engages in physical activity, the sympathetic nerves release neurotransmitters such as norepinephrine, which bind to beta-adrenergic receptors in the heart. This activation increases heart rate (chronotropy), enhances...

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