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Doctors use stethoscope to hear the soun...

Doctors use stethoscope to hear the sound, produced during each cardiac cycle. The second sound is heard when:

A

AV node receives signal from SA node

B

AV valves

C

Ventricular wall vibrate due to gushing of blood from atria

D

Semilunar valves close down after the blood flows into vessels from Ventricles.

Text Solution

Verified by Experts

The correct Answer is:
D
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Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:

Doctors use stethoscope to hear the sound of the heart. Why?

Knowledge Check

  • You must have seen the doctor checking the sounds produced in the chest or heartbeat of a patient using a medical instrument called Stethoscope. On what principle does this Stethoscope work?

    A
    refraction
    B
    reflection
    C
    wave motion
    D
    none of these

  • Two waves of length 50 cm and 51 cm produced 12 beas per second. The velocity of sound is :

    A
    331 m/s
    B
    360 m/s
    C
    340 m/s
    D
    306 m/s

  • Two waves of length 50 cm and 51 cm produced 12 beas per second. The velocity of sound is :

    A
    331 m/s
    B
    360 m/s
    C
    340 m/s
    D
    306 m/s

    • Similar Questions

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    Each cardiac cycle lasts about _______ second

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    Give an example where heat, light and sound are produced during a chemical change.

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