The heart’s contraction is synchronised by electrical impulses moving through the cardiac muscle. What is the correct order for part of the sequence of these impulses?
- Aright and left atria → atrioventricular node → Purkyne tissue → ventricular walls
- Bright and left atria → Purkyne tissue → ventricular walls → atrioventricular node
- Cright and left atria → sinoatrial node → atrioventricular node → ventricular walls
- Dsinoatrial node → right and left atria → Purkyne tissue → atrioventricular node