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Home Q & A Board Science-Related Homework Help Physics
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einsteindude einsteindude
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Posts: 5058
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9 years ago
Each heartbeat begins in the
A) sinoatrial node.
B) atrioventricular node.
C) right ventricle.
D) left atrium.
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
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bSharpbSharp
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