Purkinje fiber


Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.

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.

Purkinje fiber

A cardiac muscle cell beneath the endocardium of the ventricles of the heart. These extend from the bundle branches to the ventricular myocardium and form the last part of the cardiac conduction system.
References in periodicals archive ?
Purkinje fibers in the ostrich heart are large specialized cardiac muscle fibers.
There was cell-to-cell communication between Purkinje fibers within the bundle.
Histologically it is composed of Purkinje fibers (Figure 9).
The distribution of Purkinje fibers has been studied in various mammals.
Impulses leaving the bundle branches on either side of the heart travel over Purkinje fibers to the endocardial or innermost surface of the heart.
As the impulse enters the bundle of His, bundle branches, and Purkinje fibers, the electrocardiograph records the QRS of ventricular electrical activity.