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?

Solution for 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…

Solution for Which of the following sequences for the conducting system is correct? Select one: a. AV node, SA node, bundle branches, AV bundle, Purkinje…

Solution for Your grandfather was told that his SA node (pacemaker) has stopped functioning. Explain how his heart is still beating at a rate of 40 to 50 times…

Your grandfather was told that his SA node (pacemaker) had stopped functioning. Explain how his heart is still beating at a rate of 40-50 times per minute. Are the atria still being stimulated to contract, and what area of the heart is stimulating them?

Section 1: Create a flow chart image showing the map of the electrical activity of the heart (begin with the SA node) Include each step the electrical activity travels as it goes through the heart.

An arrhythmia originating in pacemakers that shift back and forth between the SA node and an ectopic pacemaker in the atria or AV junction is called a (n): A.

Which of the following statements is true about the SA (sinoatrial) node? a. The action potential created by the pacemaker cells of the SA node directly stimulates the contractile cells of both the atria and ventricles. b.

A collection of pacemaker cells in the sinoatrial node regulates the heart's pumping rhythm. These generate a current that travels through the atrioventricular node and along the heart's conduction system, causing the heart to contract.

Solution for If the S-A node discharges at 0.00 seconds, when will the action potential arrive at ventricular septum after passing through AV node