Science · Biology
In the human heart, the natural sinoatrial (SA) node acts as a 'pace-maker'. What function does it primarily perform?
- 1Initiating heartbeats through electrical impulses✓
- 2Regulating blood pressure in the arteries
- 3Increasing oxygen levels in the blood
- 4Controlling the rate of digestion
Correct answer
Initiating heartbeats through electrical impulses
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