would disrupt the rate and timing of cardiac muscle contractions
heart block
The sinoatrial node is a part of the electrical system of the heart. The development of the sinoatrial node is from the sinus horn myocardium in fetal development.
Sinoatrial node
The sinoatrial node triggers an impulse
No, it is the SAN (sinoatrial node)
... pacemaker.
sinoatrial node
The primary pacemaker of the mammalian heart is the sino-atrial node. If the SA node fails, the atrioventricular node (AV node) takes over pacemaking.
yes
In the Sinoatrial Node
Sinoatrial Node (SA node)
Yes the sinoatrial node is also called the pacemaker under all circumstances