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Hematology PPT

Hematology PPT

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Heartbeat regulation<br />

Sinoatrial<br />

node<br />

(Pacemaker)<br />

Atrioventricular<br />

node<br />

• The heart rate is set<br />

by the pacemaker, a<br />

bundle of nerve cells<br />

located at the top of<br />

the right atrium.<br />

• This pacemaker<br />

generates an electrical<br />

impulse that spreads<br />

over both atria.

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