What part of the conduction system fibers extend into the papillary muscles?
A) SA node
B) AV node
C) bundle branches
D) Purkinje fibers

Question

Quizplus · Accepted Answer

The Purkinje fibers are the part of the conduction system that extend into the papillary muscles. These fibers are responsible for transmitting the electrical signal from the Bundle of His to the ventricular myocardium, which ultimately causes the contraction of the papillary muscles and the opening of the atrioventricular valves during ventricular systole.

What Part of the Conduction System Fibers Extend into the Papillary