What prevents oxygen-rich blood from mixing with oxygen-poor blood in the heart?
A. The interatrial and interventricular septa
B. The fibrous pericardium
C. The intercalated discs
D. The aortic and pulmonary semilunar valves
E. The tricuspid valve
Answer: A
Anatomy & Physiology
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Answer the following statement true (T) or false (F)
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Fill in the blank(s) with the appropriate word(s).
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