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| Description: Cardiac muscle cells are self-excitable, and therefore, autorhythmic Cardiac muscle cells repeatedly generate spontaneous action potentials that then trigger heart contractions These cells form the conduction system, which is the route for propagating action potentials through the heart muscle Picture Stats: Views: 344 Filesize: 85.29kB Height: 394 Width: 628 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=41028 |