Chapter 12: The Heart’s Rhythm Keeper

I act like the natural pacemaker of the heart. Who am I?

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AV Node
0%
Bundle of His
0%
SA Node
100%
Purkinje Fibres
0%
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(2/2)
These impulses initiate each heartbeat & spread across the atria, causing them to contract. It sets the heart rate (normally about 60–100 beats per minute in adults). #MedMastodon #medical #riddle #healthcare #doctor