Biology, asked by Anonymous, 4 months ago

please give the correct answer

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Answered by glory07

2

Answer:

2. Pace maker

3. Right and left ventricles

4. Pulmonary artery

5. O.

Answered by bach0274

1

Answer:

1. Plasma

2. SA node (sinoatrial node)

3. Septa

4. Pulmonary veins

5. O negative

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