The pathway from the superior and inferior vena cavas,through the right side of the heart to the lungs is called the
A) pulmonary circuit.
B) coronary circulation.
C) systemic circuit.
D) hepatic-portal system.
Correct Answer:
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Q21: What structural component of cardiac muscle cells
Q23: What initiates the heartbeat and is called
Q23: An area other than the SA node
Q24: In an ECG,the T wave represents
A)depolarization of
Q24: The heart sounds are due to the
A)valves
Q25: A heart rate below 60 beats per
Q30: The aortic semilunar valve prevents blood from
Q30: What is the condition in which the
Q31: In an ECG,the QRS complex represents
A)depolarization of
Q32: The first heart sound,"lub," is made by
A)closure
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