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12 Cards in this Set

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