NEETBiologyBody Fluids and Its CirculationMCQ+4 / −1
Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when
- AAV node receives signal from SA node
- BAV valves open up
- CVentricular walls vibrate due to gushing in of blood from atria
- DSemilunar valves close down after the blood flows into vessels from ventricles.
View written solutionFree
Correct answer: D
Second heart sound i.e., dup is caused by the closure of the semilunar values and marks the end of ventricular systole.
More from Body Fluids and Its Circulation
- Which one of the following animals has two separate circulatory pathways?2015 · MCQ
- Erythropoiesis starts in2015 · MCQ
- Which one of the following is correct?2015 · MCQ
- Blood pressure in the mammalian aorta is maximum during2015 · MCQ
- Person with blood group AB is considered as universal recipient because he has2014 · MCQ
- How do parasympathetic neutral signals affect the working of the heart?2014 · MCQ
- The figure shows a human blood cell. Identify it and give its characteristics. Includes diagram2013 · MCQ
- The figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of label and functions of the part. Includes diagram2013 · MCQ