Autonomic nervous system effects on the heart
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Autonomic nervous system effects on the heart
Oct 21, 2012
Khan AcademyRishi Desai
Strong emotions create rapid shifts in the body’s autonomic nervous system, which directly influences the electrical signals that control heart rhythm. When a person feels fear, excitement, anger, or deep sadness, the brain sends fast signals to the heart through sympathetic and parasympathetic pathways. These signals change how quickly the heart’s electrical impulses travel. During intense emotions, the heart rate may speed up as the electrical pacemaker cells fire more rapidly. The pattern of
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