Purkinje fibres


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Purkinje fibres

The large specialized heart muscle fibres that distribute electrical impulses from the lower ends of the right and left conducting bundles to the musculature of the ventricles thereby coordinating the heart beat. (Johannes Evangelista von Purkinje, 1787–1869, Czech polymath and physiologist).
References in periodicals archive ?
Natriuretic peptide immunoreactivity in nerve structures and Purkinje fibres of human, pig and sheep hearts.
The same authors designated the end portion of the conduction tissue as terminal Purkinje fibres. The terminal Purkinje fibres establish low-resistance electrical contact with the ventricular muscle fibres and give rise to the Purkinje-muscle junctions.
Anatomy of the conducting tissue of heart: The conducting tissue of the heart comprises of SA node, AV node, AV bundle with 2 limbs & Purkinje fibres. The conducting system consists of specialized muscle fibres which connect certain pace maker regions of the heart with cardiac muscle fibres.
In 13 cm CVRL foetus the thin layer of subendothelium was observed with large number of differentiating Purkinje fibres. It was composed of loose connective tissue along with few elastic and reticular fibers, which were arranged parallel to the endocardium.
Myofibrillar M-bands developed an earlier stage in Purkinje fibres than in ordinary myocytes.