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Tardigrade
Question
Biology
The first heart sound is
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Q. The first heart sound is
Body Fluids and Circulation
A
‘LUBB’ sound produced at the end of systole.
B
‘DUP’ sound produced at the end of systole.
C
‘LUBB’ sound produced at the beginning of systole.
D
‘DUP’ sound produced at the beginning of systole
Solution:
Lub is the first heart sound, which is associated with the closure of the tricuspid and bicuspid valves at the beginning of systole