Morphological study on the thebesian veins of the right cavities of the heart in the dog.
The authors studied 48 dog hearts, using the injection-corrosion-fluorescence method to study the topography of thebesian veins in all the walls of the cardiac cavities. The thebesian veins are small, situated deep in the myocardium, opening after a short course into the cardiac cavities, by small openings with diameters in general not exceeding 1 mm, known 'foraminula'. They have a centripetal course, while every other vein in the heart has a centrifugal one, to reach the subepicardial zone. In the heart of the dog five types of thebesian veins were served: arboriform, sinuous, brush-like, canaliculated and stellate. The thebesian veins are almost regularly found in every wall of the cardiac cavities. The authors also observed that they predominated in the right ventricle (81.24%) and in the right atrium (77.43%).
D000818:Animals; D003331:Coronary Vessels / Q000033:anatomy & histology*; D004285:Dogs / Q000033:anatomy & histology*; D005260:Female; D006325:Heart Atria / Q000033:anatomy & histology; D006352:Heart Ventricles / Q000033:anatomy & histology; D008297:Male; D014680:Veins / Q000033:anatomy & histology*