Biology A-Level
sinoatrial node as pacemaker
What sinoatrial node as pacemaker means in Biology A-Level, as defined for AQA.
Definition of sinoatrial node as pacemaker
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Reference: AQA
The sinoatrial node acts as the pacemaker, originating the wave of electrical activity.
Topics that use sinoatrial node as pacemaker
- Control of heart rate (A-level only) (AQA A-Level)
Related terms
- bundle of His
- chemoreceptors
- medulla oblongata
- sinoatrial node
- sympathetic and parasympathetic pathways
- atrioventricular delay
- myogenic contraction
- pressure receptors
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