Sa Node (Noun)
Meaning
A specialized bit of heart tissue that controls the heartbeat.
Classification
Nouns denoting body parts.
Examples
- The sinoatrial node, or sa node, serves as the natural pacemaker of the heart, initiating electrical impulses that control the heartbeat.
- Dysfunction of the sa node can lead to arrhythmias and irregular heart rhythms, affecting cardiac output and overall circulation.
- A heart with a nonfunctioning sa node can still be maintained through electronic pacing by a device, like an artificial pacemaker.
- Problems in the heart may indicate faulty impulses initiated in the sa node.
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