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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.

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What segment of the cardiac conduction system functions as the pacemaker of the heart?

Sinoatrial (SA) Node


A group of conducting cells control heart muscle contraction and is known as the?

pacemaker cells


What does a ventricular pacemaker do to initiate a heartbeat?

The SA node (Sinoatrial node) sets the pace for the heart as a whole because no other region of the conduction system or the myocardium has a faster depolarization rate. For this reason, it is the heart's pacemaker.


What portion of the cardiac conduction system has the fastest intrinsic rate?

The sinoatrial (SA) node has the fastest intrinsic rate in the cardiac conduction system, typically firing at a rate of 60-100 beats per minute in a healthy heart. It serves as the primary pacemaker of the heart, initiating each heartbeat by generating electrical impulses.


What are the elements of the intrinsic conduction system in order beginning with pacemaker?

SAN >internodal pathway> AVN> AV/Hiss bundle> bundle branches> purkinje fibres


What are the primary ways that the heat energy is transferred through the earth system?

Radiation, Conduction, and Convection.


What part of the plant is the conduction system?

Conduction


Why does the heart have the Bundle of His and the Purkinje fibers?

The bundle of His and the Purkinje fibres are part of the conduction system of the heart. In order to pump blood around the body, the heart muscle must contract (atria first to fill the ventricles, then ventricles contract to send the blood around the body.) The conduction system starts in the sinoatrial node (SA node) which is also known as the hearts natural pacemaker and is located at the top of the right atrium. The impulse is then sent to the atrioventricular node (AV node) located by the junction between the atria and ventricles. The next part of the conduction system is the bundle of His which sends the impulse from the atria to the ventricles. The purkinje fibres then spread through the ventricles. As the impulse passes through each part of the conduction system, that part of the heart is excited and the heart muscle contracts, which gives the pumping action of the heart.


What are the Fibers of the conduction system of the heart?

Fibers of the conduction system of the heart is called Purkinje fibers


What component of the heart's conduction system is considered to be the heart's pacemaker?

Furkinje Fibers


What are the roles of the sino atrial nodes?

the sinoatrial (SA) node is the "pacemaker" of the heart-it is the first stucture that makes up the conduction system of the heart-the system of electrical impulses that are discharged throughout the heart and cause rhythmic cardiac contractions and relaxations. impulse conduction starts in the SA node, causing the atria to contract, then goes to the atrioventricular (AV) node, the bundle of His, and then to the pukinje fibers which cause the ventricles to contract.


What are the components of the cardiac conduction system?

The conduction starts at the pacemaker region called the Sinoatrial Node (SA node) which is just under where the superior vena cava enters the right atrium. From here the conduction passes to the Atrioventricular Node (AV node) which is just ot the right of the septum. From here the stimulation is passed through the Bundle of His which carries the conduction to the septum where two Bundle Branches pick it up. These branches carry the conduction to the base of the septum where they sperate into the Purkinje Fibres. These fibres carry the conduction all around the heart.