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The heart's contraction sequence starts with the sinoatrial (SA) node, which initiates the electrical impulse that causes the atria to contract. This impulse then travels to the atrioventricular (AV) node, where it is briefly delayed before moving to the AV bundle (Bundle of His). From there, the impulse spreads through the right and left bundle branches and into the Purkinje fibers, leading to the contraction of the ventricles. Thus, the correct sequence is SA node, AV node, AV bundle, and then Purkinje fibers.
What else can I help you with?
The correct sequence in the conduction system of the heart is?
SA node, Internodal pathways, AV node, Bundle of His, Bundle branches, Purkinje fibers.
What are the structures involved in the conduction system of the heart?
Internal pacemaker , sinoatrial(sa) node, atrioventricular (av) node , atrioventricular bundle (bundle of his ) and purkinje fibres.
What is the sequence of structures that allows the normal sequence of excitation to progress through the heart?
SA node- AV node- Bundle of His- Purkinje fibers
What is the correct sequence of parts that function to carry cardiac impulses?
SA node, AV node, AV Bundle, Purkinje Fibers
The correct sequence of parts that function to carry cardiac impulses is?
S-A node, A-V node, A-V bundle, Purkinje fibers
What is the name of the structure in the heart which distributes the electrical impulses to the ventricles?
Bundle of Hisatrioventicular bundle (bundle of his), right and left bundle bramches and the purkinge conducition fibers
What is a bundle branch composed of?
Purkinje fibers.
Correct order of intrinsic cardiac conduction?
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.
Network that stimulates the myocardium into contraction?
His bundle? or the Purkinje fibers?
What is the correct sequence of cardiac electrical activity?
The impulses from SA node spread through out the atrial musculature in about 0.09 seconds, and parallel to it, the impulses also reach the AV node. From AV node, after a delay of about 0.12 seconds they pass to the inter ventricular septum through the Bundle of His, which soon divides into Left and Right Bundle branch and ultimately into the Purkinje fibers which first depolarize the endocardium of the ventricles and then the rest of ventricular musculature. SA Node --> Atria, AV node --> Bundle of His --> Right & Left Bundle Branches --> Purkinje fibers
What are the four structures that compose the conduction system of the heart?
1. SA Node ----> 2. AV Node---> 3. AV Bundle (bundle of HIS)----> 4. Purkinje Fibers
What are the pathways through the body for electrical impulses?
in what order do the structures of the neuron carry the electrical signal?
