Heart Defects, Action Potentials, and Heart Beat

depolarization of atrial contractile fibers produces p wave

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Tags

NGSS.HS-PS2-5

atrial systole contraction

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depolarization of ventricular contraction fibers produce the QRS complex

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ventricular systole

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repolarization of the ventricular contractile fibers produces the T wave

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ventricular diastole

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rapid depolarization due to sodium ions inflow when voltage-gated fast sodium ion channels open

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Plateau due to calcium ions inflow when voltage-gated slow calcium ion channels open and potassium ions outflow when some potassium ion channels open

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repolarization due to the closure of the calcium ion channels and the potassium ion outflow when additional voltage-gated potassium ion channels open

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Tags

NGSS.HS-PS2-5