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NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION
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Read the following four statements
1) The second heart sound is DUB, which is associated with the closure of bicuspid and tricuspid valves
2) The duration between consecutive second and first heart sound is 0.5 seconds in a cardiac cycle
3) The heartbeat of a human increase when the adrenaline hormone is injected into it
4) The atrial systole in a cardiac cycle increases the flow of blood into the respective ventricle by about
How many of the above statements are incorrect?
1) The second heart sound is DUB, which is associated with the closure of bicuspid and tricuspid valves
2) The duration between consecutive second and first heart sound is 0.5 seconds in a cardiac cycle
3) The heartbeat of a human increase when the adrenaline hormone is injected into it
4) The atrial systole in a cardiac cycle increases the flow of blood into the respective ventricle by about
How many of the above statements are incorrect?
View answer and explanation
Correct option: C
2
Option C (2) is correct because two of the statements provided are factually incorrect regarding heart sounds, timing, hormonal effects, and atrial systole contribution.
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