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Home Q & A Board Biology-Related Homework Help Medicine Pharmacology (Moderator: DelightfulMind)
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crisatino crisatino
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6 years ago
A patient’s heart rate is regular at 68 beats per minute. The electrocardiogram (ECG) tracing shows P waves before every QRS complex. What is the likely pacemaker of the heart?
a.   SA node
b.   AV node
c.   Bundle of His
d.   Purkinje fibers
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PonguitoPonguito
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6 years ago
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crisatino Author
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#2
6 years ago
I feel so happy now haha
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