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35 Cards in this Set
- Front
- Back
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Why does rapid depolarization occur? |
Fast opening voltage gated sodium channels |
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Why does the plateau phase occur? |
Opening of slow calcium channels which have a long refractory period to maintain the contraction |
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Why does repolariZation occur? |
Closing of calcium channels are opening of fast potassium channels. |
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P wave |
Atrial depolarization |
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P wave |
Atrial depolarization |
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QRS complex |
Ventricular depolarization and hidden atrial repolarization |
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P wave |
Atrial depolarization |
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QRS complex |
Ventricular depolarization and hidden atrial repolarization |
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T wave |
Ventricular repolarization |
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P wave |
Atrial depolarization |
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QRS complex |
Ventricular depolarization and hidden atrial repolarization |
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T wave |
Ventricular repolarization |
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PQ segment |
Time atria are fully depolarized |
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P wave |
Atrial depolarization |
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QRS complex |
Ventricular depolarization and hidden atrial repolarization |
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T wave |
Ventricular repolarization |
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PQ segment |
Time atria are fully depolarized |
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ST segment |
Time ventricles are fully depolarized or plateau phase of ventricular AP |
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P wave |
Atrial depolarization |
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QRS complex |
Ventricular depolarization and hidden atrial repolarization |
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T wave |
Ventricular repolarization |
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PQ segment |
Time atria are fully depolarized |
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ST segment |
Time ventricles are fully depolarized or plateau phase of ventricular AP |
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PR segment |
Time it takes from AP to travel from SA node To AV mode |
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P wave |
Atrial depolarization |
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QRS complex |
Ventricular depolarization and hidden atrial repolarization |
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T wave |
Ventricular repolarization |
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PQ segment |
Time atria are fully depolarized |
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ST segment |
Time ventricles are fully depolarized or plateau phase of ventricular AP |
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PR segment |
Time it takes from AP to travel from SA node To AV mode |
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QT interval |
Beginning of ventricular depolarization and end to ventricular repolarization |
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What are cardiac cells held together by |
Intercalated discs |
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What are cardiac cells held together by |
Intercalated discs |
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What does an EKG do? |
Amplify and report signals |
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3 types of cells the heart needs |
Pacemaker cells, conductor cells and contractile cells |
