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Q: What is the function of the SA node and what factors influence its activity?
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What is the function of the AV node?

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What is function of AV node?

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The SA node depolarizes more frequently under the influence of?

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What is the sinoatrial node?

The sinoatrial node and the atrioventricular node controls the Cardiac Cycle- The Sinoatrial node is often called the Pace maker.The sinoatrial node is located in the wall of the right atrium. The Sinoatrial node emits a wave of electrical activity which reaches both Atria which causes them to contract, the wave of electrical activity is prevented from reaching the ventricles by the atrioventricular septum.Eventually the electrical activity will reach the Atrioventricular node which is situated between the atria.The Atrioventricular node conveys this along specialised muscle fibres called The Bundle of His.The bundle of his fibres release this electrical activity at the apex of the heart which causes both ventricles to contract at the same time.


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 correct sequence of parts that function to carry cardiac impulses?

SA node, AV node, AV Bundle, Purkinje Fibers


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Does EKG measure voltage?

Of course it does. That is main purpose of it. It is related to the heart node electircal activity.


If the av node were forced to assume pacemaker activity what would be the resulting pulse rate?

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