The electrical signals that tell the heart when to beat are created and transmitted by
A) conduction system cells.
B) coronary system cells.
C) contractile cells.
D) circumflex cells.
Correct Answer:
Verified
Q19: Which of these statements about the pericardium
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
Q25: Which valves open to allow the ventricles
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
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