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.