The heart valves
A) stabilize and hold the arteries leaving the heart.
B) permit the passage of blood in one direction.
C) separate the right and left sides of the heart.
D) are only used in the fetal heart.
E) direct the conduction impulse through the heart muscle.
Correct Answer:
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Q24: During a cardiac cycle,how many of the
Q25: Pectinate muscles are found on the
A)anterior wall
Q26: The internal wall surface of each ventricle
Q27: The trabeculae carneae in the left ventricle
Q28: The papillary muscles attach to the cusps
Q30: For _ of the cardiac cycle,all four
Q31: Which structure marks the end of the
Q32: The atria are separated from the ventricles
Q33: The chordae tendineae are made out of
A)collagen
Q34: The beginning of the cardiac cycle is
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