Biology
Biology, 29.04.2021 05:00, familyvazquez7

(04.01 MC) The first heart sound is made by
A- blood moving to the atria
B- blood moving to the ventricles
C- opening of the valve between the atria and the ventricles
D- closing of the valve between the atria and the ventricles

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Answers: 2

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(04.01 MC) The first heart sound is made by
A- blood moving to the atria
B- blood movi...

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