NEET Sample Paper NEET Sample Test Paper-19

  • question_answer 105) Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when

    A)  Ventricular walls vibrate due to gushing of blood from atria.

    B)  Semilunar valves close down after the blood flows into vessels from ventricles.

    C)  AV node receives signal from SA node.

    D)  AV valves open up

    Correct Answer: B

    Solution :

    The second heart sound (dub) is associated with the closure of the semilunar valves. Hence, the correct option is [b].

adversite



LIMITED OFFER HURRY UP! OFFER AVAILABLE ON ALL MATERIAL TILL TODAY ONLY!

You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos