Question

The beat your doctor listens to through a stethoscope is the sound of the four valves opening and closing question 1 options:

a. True

b. False

Answer 1

The answer is a. True. The sounds that normally the stethoscope detects has resemblance to this syllables "lub-dub". The first syllable ("lub") is the sound of closing of the atrioventricular valves and the second syllable ("dub") is the sound of opening of ventricles as the blood is pumped out to be distributed to the body.

Answer 2

The answer is true. As the blood flows rushes or flows through the valves and into the heart and they are the sounds that are being produced when the stethoscope is being placed on the person's chest as the blood makes the valves pump.