Fig. 3. Illustrations showing the middle layer of myocardium which has fibres in horizontal direction in the right ventricle and oblique direction in the left ventricle. Remarkably the distribution of the coronary arteries have been kept intact on the surface of the heart by Lason (artist) who prepared the drawing for Vieussens. Image in public domain and free from copyright issues. Source of image: Wikimedia Commons.

Anat Cell Biol 2021;54:417~423 https://doi.org/10.5115/acb.21.108

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