Pericardial fluid
A) Decreases friction of the pericardial layers as they rub against each other.
B) Prevents backflow of blood from one chamber to the other.
C) Circulates through the heart's chambers.
D) Lubricates the electrical system of the heart.
Correct Answer:
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Q1: Which of the following are both AV
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A)Blood traveling through the
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A)Systole and
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