Blood returning directly from the systemic circulation enters the
A) right atrium.
B) right ventricle.
C) left atrium.
D) left ventricle.
E) pulmonary trunk.
Correct Answer:
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Q10: Each cardiac muscle cell is bound to
Q11: The muscle layer of the heart is
Q12: The great and middle cardiac veins drain
Q13: The muscular ridges found on the internal
Q14: The innermost layer of the heart wall
Q16: The right atrium receives blood from the
Q17: The loose-fitting sac around the heart is
Q18: Malfunctioning chordae tendineae would
A) allow blood to
Q19: Which structural feature of the heart is
Q20: The tricuspid valve is located
A) in the
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