The Purkinje Fibers

Question

The Purkinje fibers
A) open valves.
B) pull on the cusps of the valves.
C) conduct electrical signals throughout the ventricles.
D) close valves.

Accepted Answer

The Purkinje fibers conduct electrical signals throughout the ventricles, coordinating the contraction of the ventricular muscle cells to pump blood out of the heart. They do not open or close valves or pull on the cusps of the valves.