[PHGY 350] - Final Exam Guide - Ultimate 99 pages long Study Guide!

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Coro(cid:374)ary (cid:271)lood flo(cid:449), o2 supply to heart, tissue perfusion (ischemia) Depends on size and location of cardiac branch. Fallot"s tetralogy: narrowing of pulmonary valve (stenosis, thickened r. vent wall (hypertrophy, overriding aorta, ventricular septal defect. Experiencing chest pains (exertion, stress, heavy meals, cold weathers) Ecg: irregular p-waves, wide qrs, missed beats, fibrillations, flutters, premature waves. Antiarrhythmic drugs: (cid:894) - blockers, ca channel blockers, digitalis) Bluish discoloration of skin/mucous membranes due to low o2 saturation. Abnormal immune reaction from untreated he(cid:373)olyti(cid:272) strep group. Cardiovascular system: transports: o2 & co2, nutrients & waste, hormones & metabolites, regulates: temperature, fluid volume & ph. Cardiomyocytes: mononucleated, striated, intercalated discs (to work like one muscle), very aerobic (high in myoglobin and mitochondria) Conducting system: sa (sinoatrial) node = pacemaker intermodal pathway atrioventricular node av bundle (bundle of his) bundle branches purkinje fibers. 4 events of cardiac cycle: atrial systole, atrial diastole, ventricular systole, ventricular diastole ( 800msec between two successive heart beats)

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