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Plz help me on this question and nooo links pls true or false The first heart sound (S1) is caused by closure of the AV valves and the second heart sound (S2) is caused by closure of the SL valves.
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Plz help me on this question and nooo links pls

true or false
The first heart sound (S1) is caused by closure of the AV valves and the second heart sound (S2) is caused by closure of the SL valves.

User Zote
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2 votes

Answer:

yes

Step-by-step explanation:

first is by the atrioventricular valve and the second is by the semi-lunar valve

User Nicolas Keller
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