Purkinji fibers are found in the ……..just beneath the endocardium.
a) dorsal walls of atria
b) dorsal walls of ventricles
c) inner walls of ventricles
d) inner walls of atria
Which of the following is a medical device used for recording the electrical activity of the heart?
a) BGC
b) ECG
c) Sonogram
d) voltmeter
Explanation: ECG stands for electrocardiogram
ECG is carried out to find…….
a) arrhythmias
b) heart rate
c) heart attack
d) all of these
The rate of paper recording ECG is ……
a) 0.2 mm/sec
b) .3 mm/sec
c) 25 mm/sec
d) 0.4 mm/sec
During ECG, which of the following shows the atria and ventricles are relaxed?
a) TP interval
b) P wave
c) QR interval
d) RS interval
Explanation: blood flows from veins to atria and atria to ventricles via AV valve
During which of the following ECG reading, the SA node fires and the atria contract causing atrial systeole which forces all blood into ventricles, emptying the atria?
a) TP interval
b) P wave
c) QR interval
d) RS interval
Explanation: it is the atrial systole
