the transmission of electrical impulses in the heart begins at the myocardium.
the transmission of electrical impulses in the heart begins at the myocardium.
where does the transmission of electrical impulses in the heart begin?
myocardium
specialized cardiomyocytes located in the sinoatrial node are responsible for generating the electrical impulses that control the heart rate. these electrical impulses coordinate contraction throughout the remaining heart muscle via the electrical conduction system of the heart. sinoatrial node activity is modulated, in turn, by nerve fibres of both the sympathetic and parasympathetic nervous systems. these systems act to increase and decrease, respectively, the rate of production of electrical impulses by the sinoatrial node.









































section::::fiber typing.
myocyte
cardiac pacemaker cells carry the impulses that are responsible for the beating of the heart. they are distributed throughout the heart and are responsible for several functions. first, they are responsible for being able to spontaneously generate and send out electrical impulses. they also must be able to receive and respond to electrical impulses from the brain. lastly, they must be able to transfer electrical impulses from cell to cell.
cardiac muscle cell