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compare structure of right atrioventricular valve with that of pulmonary valve`
the right atrioventricular valve is made of 3 large cusps that contain tendinae. the pulmonary valve is made of 3 smaller pocket like cusps that lack chordae tendinae
Describe the action of right atrioventricular valve when you squeezed the water filled right ventricle
The cusps of the right atrioventricular valve move upward into horizontal position and close the opening between right atrium and right ventricle
about what percent of blood from atria passes into the ventricles before the atrial walls contract
the pulmonary and aortic valves open when the pressure in what exceeds the pressure in the pulmonary trunk and aorta
the fibers that carry cardiac impulses from the interventricular septum into the myocardium are called
what is a recording of an electrical change occuring in myocardium during the cardiac cycle
between cardiac cycles, cardiac myscle fibers remian what? with no detectable electrical charges
why is atrial repolarization not observed in the ECG
Atrial repolarization occurs at the same time as ventricular repolarization.
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