Q. The mammalian heart is myogenic and it is regulated by nerves. The heartbeat originates from
A) QRS wave
B) sinoatrial node
C) hepatic portal system
D) T wave
✔ Correct Answer: T wave
Exam Insight
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A) QRS wave
B) sinoatrial node
C) hepatic portal system
D) T wave
✔ Correct Answer: T wave
-
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