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The human heart started out as a enlarged blood vessel that appears as two blood vessels coming together. The heart is comprised of four chambers two small chambers called the atrium and two large chambers known as the ventricles. There are several tissue layers of the heart. The internal layer is known as the endocardium the muscle layer is known as the myocardium, and the outer layer is known as the epicardium. There is an outermost sac called the pericardium that makes up a cavity in the thoracic cavity known as the mediastinum. There are specialized conducting cells or tissue within the myocardium of the heart. These specialized tissue performs the electrical conduction of the heart. The first is the sinoatrial node or the SA node found in the right upper atrium, the next one is the atrioventricular node or the AV node found in the right lower atrium. Then there is a group of this tissue known as the bundle of His or AV bundle (found in the wall of the ventricular septum (the dividing wall between the two ventricles)) and then the right and left buncle branches ( found also in the wall of the intraventicular septum and the outer ventricles) until you come to the purkinjie fibers at the end in the walls of the ventricles. The primary pacemaker of the heart is the SA node and depending on what is going on with the heart as far as damage the secondary pacemaker is the AV node, however the bundle of His could become a pacemaker site or the right and left bundle branches. The lower you go in the pacemaker sites the slower and less able the heart is to conduct proper electrical stimulation to effect the heart conduction and contraction (beat of the heart).
Dr. Rick Reed
What else can I help you with?
What name is the rate set by the heart pacemaker?
Pacemakers are set by the surgeon-physician at the time it is implanted. Most times, the pacemaker is simply set to a normal heart rate (around 70-80 beats per minute). The primary function of the pacemaker is to restore a more regular beat when the heart cannot maintain a normal heart rate. You should consult your physician-surgeon for particulars about your pacemaker, its use, function, and signs/symptoms to watch for after the pacemaker is implanted.
What is considered the pacemaker of the heart?
The sinoatrial node is considered the pacemaker of the heart.
What is the main pace maker of the heart?
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.
Where is the Natural pacemaker?
The SA node, the natural pacemaker of the heart, is found in the right atrium of the heart.
Is the bundle of his is known as the natural pacemaker of the heart?
No, the Sinoatrial Node is known as the natural pacemaker of the heart
What is the back-up pacemaker of the heart?
The sinoatrial node is known as the pacemaker of the heart.
Is a pacemaker a group of cells located in the left atrium?
A pacemaker is a device inserted into the heart to regulate the heart beats or heart rate
Where is located the pacemaker?
The pacemaker is located on the outside of the right atrium.
What is the technical term for your pacemaker?
The heart's "pacemaker" is the SA (sinoatrial) node.
How can electricity help you with your pacemaker?
A pacemaker delivers an electric stimulus to the heart.
What purpose does an artificial pacemaker serve?
A pacemaker is a medical device which uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's native pacemaker is not fast enough, or there is a block in the heart's electrical conduction system.It takes over the function of the sino-atrial node, that is the natural pacemaker of the heart. A pacemaker gives impulses so that the heart contracts and the blood flows out
What property makes the normal pacemaker region of the heart function as a pacemaker?
The property of the normal pacemaker region is able to provide a normal setting for the heart to beat. It allows the heart to beat at a regular rate.
