The sinoatrial, or SA, node is known as the pacemaker of the heart. There are other potential pacemakers if the SA node fails, but it is the main pacemaker.
Sinoatrial node, or SA node.
SA node effects which neurotransmitter?
The primary pacemaker of a normal healthy heart is the sinus node (or SA node). It is located in the right atria of the heart.
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.
Its one of these, cant remember which one though: AV node, SA node AV bundle, Purkinje fibres. SA node, AV bundle, Purkinje fibres, AV node. SA node, AV node, AV bundle, Purkinje fibres. Purkinje fibres, SA node, AV node, AV bundle.
No, the purkinje fiber is not the natural pacemaker. The sinoatrial node (SA node) is the natural pacemaker of the heart.
If the SA node fails to fire the atrioventricular node should take over.
Cardiac muscles don't contract in unison, if you listen to your heart beat you should hear two distinctive thumps (1 for the atria, 1 for the ventricles). I believe the structure you're looking for is the Sinoatrial Node (SA node) which is a bundle of nerves in the upper part of the right atrium, also known as the 'pace maker'. The electrical impulse from the node triggers a sequence of electrical events (from the SA Node to the A(trio)V(entricular) node to the Purkinje fibers) which are the cause of the beating/contracting
The anterior, upper part of the right atrium.The Sinoatrial Node or SA Node is located in the right Atrium of the Heart. The SA node is responsible of the normal sinus rhythm.
NO! it is the SA Node..
SA node