Scanning Electron Microscopy of Purkinje Fibers in the Bovine Heart

概要

論文の詳細を見る
Subendocardial Purkinje (P) fibers in the bovine heart were observed by scanning electron microscopy after removal of the endocardium or freeze cracking. Small branches from the left and right limbs of the atrioventricular conducting system were spread out, forming an irregular and delicate P network under the ventricular endocardium. P fibers forming strands of the network were roughly cuboidal, rectangular, or oval. They were branching cells with a diameter two to five times as long as that of the ordinary cardiac muscle fibers. The P fibers had few myofibrils and mitochondria. Their sarcoplasm was packed with a network of filaments which were not organized into myofibrils. They frequently communicated with ordinary cardiac muscle fibers through transitional fibers. A direct continuity was rarely observed between them.
日本獣医循環器学会の論文