how is heart contraction triggered heart


How is heart contraction triggered?

Heart contraction is independent from neuronal stimulus (although it can be modulated by the autonomous nervous system). In the heart there are pacemaker cells that trigger by themselves the action potentials that start the muscle contraction. These cells are concentrated at two special points of the heart: the sinoatrial node (SA node) situated in the superior portion of the right atrium and the atrioventricular node (AV node) situated near the interatrial septum.

 

Request for Solution File

Ask an Expert for Answer!!
Biology: how is heart contraction triggered heart
Reference No:- TGS0324485

Expected delivery within 24 Hours