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Home Q & A Board Biology-Related Homework Help Medicine
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PiMaster314 PiMaster314
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5 years ago
The heart's valves open and close in response to changes in

• the heart's pacemaker.

• pressure.

• sodium and potassium concentration.

• oxygenation.
Textbook 
EKG Plain and Simple

EKG Plain and Simple


Edition: 4th
Author:
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BtllllllBtllllll
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5 years ago
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PiMaster314 Author
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5 years ago
Brilliant ツ
wyq2651
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This site is awesome
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Thank you, thank you, thank you!
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