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The tertiary pacemaker is also known as the?
av node
What is the back-up pacemaker of the heart?
The sinoatrial node is known as the pacemaker of the heart.
What is called the reserve pacemaker?
av node
What is the hearts second pacemaker called?
AV node
What component of the heart's conduction system is considered to be the heart's pacemaker?
Furkinje Fibers
Intrinsic rate of AV node?
The intrinsic rate of the AV node, also known as the inherent pacemaker rate, is the rate at which the AV node generates electrical impulses when not influenced by outside factors. It is typically around 40-60 beats per minute and serves as a backup pacemaker if the SA node fails to function properly. The AV node's intrinsic rate helps to regulate the heart rate and maintain cardiac function.
What pacemaker of the heart initiates depolarization under normal conditions?
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.
Where are the cells located that make up the pacemaker?
If you mean the heart, there are two pacemakers. One is in the SA Node and the secondary (and slower) back up pacemaker is in a AV Node.
How is the action of the pacemaker is related to the symptoms of heart block and fibrillation?
In a Cardiac condition known as heart block, there is an interruption in the message from the SA node to the AV node. The interruption can occur in varying degrees.
Is pacemaker cell and node cell the same?
Pacemaker cells and node cells are not exactly the same, but they are closely related. Pacemaker cells are specialized cardiac muscle cells responsible for initiating and regulating the heartbeat, primarily found in the sinoatrial (SA) node, which is the heart's primary pacemaker. The term "node cells" typically refers to the cells within the SA node and the atrioventricular (AV) node, both of which play critical roles in the conduction system of the heart. Thus, while all pacemaker cells are node cells, not all node cells are pacemaker cells.
Explain how the action of the pacemaker is related to the symptoms of heart block and fibrillation?
In a Cardiac condition known as heart block, there is an interruption in the message from the SA node to the AV node. The interruption can occur in varying degrees.
Why the sino atria node is regarded as a pacemaker in the heart?
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.
