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- 1. Multiple Choice
This is the pacemaker of the heart (#1)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
- 2. Multiple Choice
Specialized conduction tissue in the interventricular septum; divides into the right and left branches. (#5)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
- 3. Multiple Choice
Where the electrical signal arises in normal sinus rhythm. (#1)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
- 4. Multiple Choice
The electrical signal spreads from the conduction tissue in the atria to this structure. It slows the signal for a short time to allow the atria to contract before the signal is sent to the ventricles. (#2)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
- 5. Multiple Choice
Fast-conducting fibers that spread the electrical signal throughout the ventricular wall (#3)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
- 6. Multiple Choice
Where the electrical signal arises in nodal rhythm at a rate of 40-50 BPM. (#2)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
- 7. Multiple Choice
Fibers that spread the electrical signal throughout the atrial wall (#6)
SA node
AV node
Purkinje fibers
atrial conducting fibers
right and left bundle branches
- 8. Multiple Choice
These carry the signal from the bundle of his to the purkinje fibers. (#4)
SA node
AV node
Purkinje fibers
bundle of his
right and left bundle branches
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