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elena55 [62]
3 years ago
11

The Dub in “lub dub” is the closing of the ____________________ and _____________ valves because pressure in the arteries is gre

ater than in the ___________________.
Biology
1 answer:
astraxan [27]3 years ago
4 0

Answer:

The first heart sound (lub) can be heard the loudest at the mitral area. This sound represents the closure of the mitral and tricuspid valves and is a low pitched, dull sound at the beginning of ventricular systole. S2 – The second heart sound (dub)

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