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APEX: EKG monitors & equipment Question and answers 100% correct 2026/2027
APEX: EKG monitors & equipment Question and answers 100% correct 2026/2027 
 
Which pathway depolarizes the left atrium? 
A. Thorel tract 
B. Bachman bundle 
C. Kent bundle 
D. Wenckebach tract - correct answer B. Bachman. Bundle 
 
There are 3 internodal tracts that travel from the SA to AV node: 
1. Anterior internodal tract (gives rise to Bachmann bundle) 
2. Middle internodal tract (Wenckebach tract) 
3. Posterior internodal tract (Thorel tract) 
 
Conduction velocities if cardiac conduc...