Biology, 16.11.2020 05:40, hallmansean04

What explains why the left and right sides of the heart contract simultaneously? A Both atria have a sinoatrial node
B Both sides of the heart are supplied by the same coronary artery.
C Purkyne tissue links the two sides of the heart
D There is no barrier to electrical excitation between two sides of the heart

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What explains why the left and right sides of the heart contract simultaneously? A Both atria have...