Heart As A Pump Part 1 Flashcards
There are ___ valves between veins and atria
No
Action potentials spontaneously generated by ___ node pacemaker cells are the driving force for blood flow
SA
What is the polarization done by atrial contraction
Depolarization
What is the polarization done by atrial relaxation
Repolarization
What is the polarization done by ventricular contraction
Depolarization
What is the polarization done by ventricular relaxation
Repolarization
Is systole or diastole the result of depolarization
Systole
Is systole or diastole the result of repolarization
Diastole
What is the following:
Atria contract at the end of ventricular filling to “tops up” the almost full ventricles
Atrial systole
What is the following:
Close AV valves
Isovolumetric contraction
Rapid ejection and reduced ejection
Ventricular systole
What is the following: in ventricular systole
Mitral valve in the L heart and tricuspid valve in the R heart
Close AV valve
What is the following: in ventricular systole
Aortic and pulmonary valves open when ventricular pressures exceed the pressure in aorta and pulmonary artery
Isovolumetric contraction
What is the following: in ventricular systole
Aortic and pulmonary valves close at the end of ejection due to the back flow of blood in aorta and pulmonary artery demarcates the end of ventricular systole and the beginning of ventricular diastole
Rapid ejection and reduced ejection
What is the following:
Isovolumetric relaxation
Rapid and reduced ventricular filling (diastasis)
Ventricular diastole
What is the following: in ventricular diastole
Mitral valve and tricuspid valve open when ventricular pressures fall below atrial pressures
Isovolumetric relaxation
