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12 Cards in this Set
- Front
- Back
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Irregular heart rhythm
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arrythmia
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Rapid, irregular contraction (worms)
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Fibrillation
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Another part of the heart becomes the pacemaker, either av node or caffeine
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Ectopic focus
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Another part of the heart becomes the pacemaker, either av node or caffeine
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Ectopic focus
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Ventricular contraction
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Systole
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Ventricular relaxation
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Diastole
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-Pressure in ventricles is low
-Blood flows from atria to ventricles -Semilunar valves closed -AV valves are open |
Mid to late diastole
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-Pressure in ventricles increase
-AV valves close -Semilunar valves open -Blood rushes into major arteries |
Ventricular systole
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-Ventricles relax
-Ventricular pressure drops -Semilunar valves close -Ventricles completely closed/empty/relaxed momentarily |
Early diastole
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"LUB"
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closing AV valves/systole
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"DUB"
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closing SL valves/diastole
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What controls the SA node?
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medulla oblongata
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