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Does atrial systole occur before or after the firing of the sinoatrial node?
Wiki User
∙ 10y ago
The SA node makes the action potential for the heart. Atrial systole must occur after the action potential.
Wiki User
∙ 10y ago
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Why Heart rate is up when hand in cold water?
Due to increased sympathetic stimulation of efferent neurons from the cardiac accelerator center in the brain medulla. This results in an increased firing rate from the Sinoatrial Node and increased conductivity leading to greater contractility.
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What should you do before firing a shot from small boat?
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