Cardiovascular Heart Cycles Flashcards
1
Q
Where is the sinoartrialnode located? A.Right atria B.Left atria C.Left ventricle D.Right ventricle E.Aorta
A
A right Atria
2
Q
Which of the following best describes the path of the electrical activity of the heart?
A.SA node, Purkinje fibres, AV node, ventricles
B.AV node, Atria, SA node, Purkinje fibres
C.SA node, Atria, AV node, Purkinje fibres
D.SA node, AV node, Atria, Purkinje fibres
E.Purkinje fibres, SA node, Atria, AV node
A
C SA node, Atria, AV node, Purkinje fibres
3
Q
In an ECG, what does the T wave represent A.Atrial depolarization B.Atrial repolarization C.Ventricular depolarization D.Ventricular repolarization E.SA node firing
A
D Ventricular repolarization
4
Q
During isovolumetric contraction:
A.Both the AV and semilunar valves are closed
B.The pressure in the ventricle is decreasing
C.Both the AV and semilunar valves are open
D.AV valves are close and semilunar valves are open
E.Semilunar valves are open and AV valves are closed
A
A Both the AV and semilunar valves are closed
5
Q
When will semilunar valves be open A.During ventricular ejection B.During ventricular diastole C.During isovolumetric relaxation D.During atrial systole E.During atrial diastole
A
A During ventricular ejection
