Part of Mosby's successful monograph series, CARDIOVASCULAR PHYSIOLOGY presents fundamental concepts clearly and concisely. Students gain a solid understanding on how the cardiovascular system functions in both health and disease. Throughout, excellent illustrations and consistent pedagogical features focus student learning. In addition, the clinical commentaries help students apply what they've learned to real-life clinical situations.
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Electrical activity of the heart
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action potential activity aorta arterial blood arterioles autoregulation baroreceptors beats block blood pressure blood volume Ca++ capacitance vessels capillary cardiac muscle cardiac output cardiovascular carotid sinus cerebral changes chemoreceptors Circ circulation circulatory concentration constant contraction coronary artery coronary blood flow decrease depolarization diastolic dilation distensible effect electrodes evoked factors filtration frequency function gradient greater heart rate hemorrhage Hence impulse increase left ventricle left ventricular mean arterial pressure mechanism membrane metabolic myocardium norepinephrine normal occurs oxygen pacemaker perfusion pressure peripheral resistance phase Physiol physiological plasma precapillary pulmonary pulse pressure pump Purkinje fibers receptors Redrawn reduction reflex region resistance vessels response result S-A node shown in Fig skeletal muscle skin smooth muscle stroke volume sympathetic nerve systole tachycardia tension tion tissue tube vagal valves vascular bed vasoconstriction vasodilation veins velocity vena cava venous pressure curve venous return ventricular pressure ventricular systole viscosity wall wave whereas