Which valves open to allow the ventricles to fill?
A) Aortic and pulmonic
B) Tricuspid and pulmonic
C) Tricuspid and mitral
D) Aortic and mitral
Correct Answer:
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Q20: The layer of the heart that is
Q21: Together,the sympathetic nervous system and the parasympathetic
Q22: The vessel that delivers oxygenated blood to
Q23: Stimulation of the vagus nerve
A)causes the release
Q24: The electrical signals that tell the heart
Q26: Which type of cardiac cells cause the
Q27: In which two chambers of the heart
Q28: Pulmonary veins deliver blood to the
A)right atrium.
B)left
Q29: The fight-or-flight response is
A)associated with the sympathetic
Q30: The epicardium is the layer of the
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