To originate muscle contractions and regulate the rhythm of the heart.
Dictates the heart rate at 70 - 80 beats per minute when the body is at rest. It originates the electrical impulse for the entire conduction system of the heart.
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
In the Sinoatrial Node
yes
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.
Sinoatrial Node (SA node)
Known as the "pacemaker of the heart," the sinoatrial node would most likely speed up if the body temperature were to rise.
Yes the sinoatrial node is also called the pacemaker under all circumstances