Zoology - Body Fluids and Circulation Question with Solution | TestHub
ZoologyBody Fluids and CirculationCardiac CycleMedium2 minPYQ_2015
ZoologyMediumsingle choice
Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:NEET 2015 (Phase 2)
Options:
Answer:
B
Solution:
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope. There are two prominent heart sounds:
- The first sound is of low intensity, lub, which is associated with the closure of mitral and tricuspid valve. This is the beginning of ventricular systole.
- The second sound is of higher intensity, dup, which is associated with the closure of semilunar valves and mark the end of ventricular systole.
Stream:NEETSubject:ZoologyTopic:Body Fluids and CirculationSubtopic:Cardiac Cycle
⏱ 2mℹ️ Source: PYQ_2015
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