QUESTION 3 What would happen if the AV node failed to delay transmission of signals from the SA node? The atria and ventricles would contract at the same time The ventricles would start squeezing from the top to the bottom The AV node and the SA node would be unable to communicate Neuronal regulation of heart rate would be impaired None of the above are correct

AV node, AV bundle, SA node, Purkinje fibers, bundle branches. BUY. Human Anatomy & Physiology (11th ...

While the SA node is considered the pacemaker of the heart, the AV node is also capable of generating spontaneous action potentials, allowing it to serve as a “backup system” in case of SA node failure. If the SA node fails, how would you anticipate the baseline heart rate to change, and why is this the case?

QUESTION 2 What would happen if the electrical signals radiated out from the AV node rather than being routed to the apex of the heart? The atria and ventricles would contract at the same time The ventricles would start squeezing from the top to the bottom The AV node and the SA node would be unable to communicate Neuronal regulation of heart ...

If damage to the AV node slowed down conduction through the heart, what would be observed on an ECG? an inverted T wave a longer PR interval a larger P wave a wider QRS complex a longer P wave

The AV node works as a secondary pacemaker if the SA is irregular, firing at 40-60 pulses/min. After leaving the AV node, the electrical impulse travels to the bundle of His. The bundle of His forms the only myocardial connection between the atria and ventricles.

Scenario 2-One very unhealthy-looking human goes into atrial fibrillation while working out in the Vegan gym. This is when the SA node is not generating coordinated electrical impulses. Instead, impulses are flowing randomly over the atrial walls eventually making their way to the AV node. The AV node then generates normal electrical impulses.

A: In a normal sinus rhythm the electrical impulse startsin the sinoatrial node. which formulates P… Q: 12. A true statement concerning conduction in first-degree AV block is that!

Because of a reduced blood supply to the AV node, the delay in theconduction of action potentials from the SA node to the AV node isincreased slightly. All other areas of the conducting system of the heartare functioning normally. Predict how this affects the normal rhythm ofthe heart.

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