Asked by Carolina Arroyo on May 11, 2024
Verified
Which of the following sequences for the conducting system is correct?
A) AV node, AV bundle, SA node, Purkinje fibers, bundle branches
B) Purkinje fibers, bundle branches, AV node, AV bundle, SA node
C) SA node, AV node, AV bundle, bundle branches, Purkinje fibers
D) SA node, AV bundle, AV node, bundle branches, Purkinje fibers
E) AV node, SA node, bundle branches, AV bundle, Purkinje fibers
Conducting System
A network in the heart that electrically controls and coordinates heart muscle contractions.
SA Node
The sinoatrial node, a group of cells in the right atrium of the heart that acts as a natural pacemaker by initiating the heart's electrical impulses.
Purkinje Fibers
Specialized conducting fibers located in the heart's ventricles that help regulate the heart's rhythm.
- Delineate the key components and their functionalities within the cardiac conduction system.
Verified Answer
TH
Taylore HarrisMay 16, 2024
Final Answer :
C
Explanation :
The correct sequence for the conducting system of the heart starts with the sinoatrial (SA) node, then moves to the atrioventricular (AV) node, followed by the AV bundle (bundle of His), then to the bundle branches, and finally to the Purkinje fibers. This pathway ensures the proper timing and coordination of heart muscle contractions.
Learning Objectives
- Delineate the key components and their functionalities within the cardiac conduction system.