Which among the following statements is correct regarding first heart sound?

Produced due to simultaneous closure of both the atrioventricular valves
Produced due to the simultaneous closure of both semilunar valves
Appears between 'T' and 'P' waves of ECG
Coincide with the 'T' wave in ECG

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 1 : Produced due to simultaneous closure of both the atrioventricular valves

Concept:

Heart beat includes “lub” and “dub”
In which the first heart sound is produced by the closure of Auriculo ventricular valve AV valves
The second heart beat is produced by the closure of aortic and pulmonary valves

Cardiac cycle comprises of physiological events that occurs in a single heart beat
ECG is electro cardio gram which measures the electrical activity of heart
ECG includes P wave, QRS complex and T wave
P wave represents electrical depolarization of atria
QRS complex indicates ventricular depolarization
T wave represents repolarization of ventricular myocardium

4 views Answered 2022-09-04 04:29

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