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PiMaster314 PiMaster314
wrote...
Posts: 423
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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Posts: 429
5 years ago
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PiMaster314 Author
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Helped a lot
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Just got PERFECT on my quiz
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You make an excellent tutor!
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