During the ECG reading, the AV valves remain open as all remaining blood is squeezed into the ventricles and impulse from SA node reaches the AV node which spreads the signal throughout the walls of ventricles?
a) TP interval
b) P wave
c) QR interval
d) RS interval
Explanation: it is the end of ventricular diastole
Which of the following is the end of ventricular diasotole and and the start of systole?
a) TP interval
b) P wave
c) the R peak
d) RS interval
During which of the following ECG, the ventricles start to contract although pressure is not yet high enough to open the SL valves?
a) TP interval
b) P wave
c) QR interval
d) RS interval
Explanation: it the ventricular systole
During which of the following the pressure increases until it equals aortic pressure when the SL valves open and the blood is ejected to aorta and pulmonary artery as the ventricles contract?
a) ST segment
b) P wave
c) QR interval
d) RS interval
Explanation: it is also the ventricular systole. At this stage atria are in in diastole and filling
During which of the following ECG, ventricles relax, the ventricular pressure is once again less than the aortic pressure and so the SL valves close?
a) TP interval
b) T wave
c) QR interval
d) RS interval
Explanation: it is the ventricular diastole
RBCs are destroyed
in the liver while the WBCs are destroyed in…….
a) spleen
b) thymus
c) liver
d) inside the various cells of body
