SLCC PHYSIOLOGY 2425 LAB FINAL
JACK LATER EXAM QUESTIONS AND
ANSWERS
An ECG measures ventricle depolarization and ventricle re-polarization - Answer-True
An ECG accurately graphs atrial depolarization and atria re-polarization - Answer-False
The QRS complex shows the - Answer-Depolarization of ventricles
The P wave shows the - Answer-depolarization of atria
The T wave shows the - Answer-repolarization of ventricles
The order of conduction through the heart is as follows: - Answer-SA Node->Atria->AV
Node->bundle of HIS -> Bundle Branches ->Purkinje Fibers
Determine the R Wave axis of depolorization through the heart, given the following
leads:
Lead l = +1
Lead 2 = +2
Lead 3 = +.5 - Answer-+70 degrees
The PR segment of an ECG - Answer-It indicates the period from atrial systole to
ventricular systole
In a normal heart, the "LUB" sound is the first sound.
How does the "LUB" sound occur? - Answer-Turbulent blood flow through the AV valves
Cardiac Output is defined as - Answer-Heart rate X Stroke volume
Systolic Pressure is the result of - Answer-ventricular systole (contraction)
The average systolic /diastolic pressures are - Answer-120/80
The SA node is - Answer-pacemaker of the heart, autorhythmic
Stimulation of the parasympathetic nervous system causes postganglionic neurons to
release epinephrine, which slows the heart rate - Answer-False
JACK LATER EXAM QUESTIONS AND
ANSWERS
An ECG measures ventricle depolarization and ventricle re-polarization - Answer-True
An ECG accurately graphs atrial depolarization and atria re-polarization - Answer-False
The QRS complex shows the - Answer-Depolarization of ventricles
The P wave shows the - Answer-depolarization of atria
The T wave shows the - Answer-repolarization of ventricles
The order of conduction through the heart is as follows: - Answer-SA Node->Atria->AV
Node->bundle of HIS -> Bundle Branches ->Purkinje Fibers
Determine the R Wave axis of depolorization through the heart, given the following
leads:
Lead l = +1
Lead 2 = +2
Lead 3 = +.5 - Answer-+70 degrees
The PR segment of an ECG - Answer-It indicates the period from atrial systole to
ventricular systole
In a normal heart, the "LUB" sound is the first sound.
How does the "LUB" sound occur? - Answer-Turbulent blood flow through the AV valves
Cardiac Output is defined as - Answer-Heart rate X Stroke volume
Systolic Pressure is the result of - Answer-ventricular systole (contraction)
The average systolic /diastolic pressures are - Answer-120/80
The SA node is - Answer-pacemaker of the heart, autorhythmic
Stimulation of the parasympathetic nervous system causes postganglionic neurons to
release epinephrine, which slows the heart rate - Answer-False
