Heart valves ensure that blood will flow one-way. Which of the following accurately describes the role differences in pressure play in valve function?
A) AV open when pressure in the ventricles exceeds pressure in the atria.
B) SL open when pressure in the ventricles exceeds pressure in the arteries.
C) AV open when pressure in the ventricles exceeds pressure in the arteries.
D) SL open when pressure in the ventricles exceeds pressure in the atria.
Correct Answer:
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