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The heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
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If the SA node fails to fire what takes over?
If the SA node fails to fire the atrioventricular node should take over.
How the human heart is timed?
The rhythmic sequence of contractions is coordinated by the sinoatrial (SA) and atrioventricular (AV) nodes.
Where does the atria located?
The Heart's own pace makerThe heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
What is the the correct path for the transmission of an impulse in the intrinsic conduction system of the heart?
sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers
What part of the heart's conduction system acts as the primary pacemaker?
The atrioventricular (AV) node which is located in the right atrium. From there is travels down the septum, also called the atrioventricular bundle, and then spreads to all parts of the ventricles via the Purkinje fibers.
The mass of conduction tissue located in the septum at the bottom of the right atrium?
atrioventricular node (AV node)
Is the peacemaker of the heart the atrioventricular node?
NO! it is the SA Node..
What are the five areas of specialized myocardium?
sinoatrial node, right and left bundle branches, atrioventricular node, atrioventricular bundle, ventricular walls.
Which node is located in the inferior portion of the interatrial septum?
The atrioventricular (AV) node is located in the inferior portion of the interatrial septum near the opening of the coronary sinus.
What node is located in the inferior portion of the interatrail septum?
The Atrioventricular (AV) node is located in the inferior portion of the interatrial septum. It is a specialized cluster of cells that conducts electrical signals from the atria to the ventricles, helping to regulate the heartbeat.
If the SA node fails to fire what takes over?
If the SA node fails to fire the atrioventricular node should take over.
How the human heart is timed?
The rhythmic sequence of contractions is coordinated by the sinoatrial (SA) and atrioventricular (AV) nodes.
What is a atrioventrical node?
The atrioventricular node is a part of electrical control system of the heart that co-ordinates heart rate.
What delays the electrical impulses for the muscle to contract?
Atrioventricular (AV) node
Where does the atria located?
The Heart's own pace makerThe heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
Nodes in the heart?
The nodes in the heart control the hearts electrical system. The nodes are known as the sinoatrial node and the atrioventricular node.
When does nodal rhythm occur?
Usually in patients with a pacemaker, it happens in the atrioventricular node.
