| any of the specialized cardiac muscle fibers forming a network in the ventricular walls that conduct electric impulses responsible for the contractions of the ventricles. |
| Purkinje fiber n. One of the specialized cardiac muscle fibers, part of the impulse-conducting network of the heart, that rapidly transmit impulses from the atrioventricular node to the ventricles. [After Johannes Evangelista von Purkinje (1787-1869), Bohemian physiologist.] |
Purkinje fiber n.
Any of the specialized cardiac muscle fibers, part of the impulse-conducting network of the heart, that rapidly transmit impulses from the atrioventricular node to the ventricles.