River Birch

The middle cardiac vein commences at the apex of the heart. It passes posteriorly along the inferior interventricular sulcus to end at the coronary sinus near the sinus' termination.^[1]

Structure

The middle cardiac vein commences at the cardiac apex (here, it is contiguous with the great cardiac vein, thus forming - along with the coronary sinus - a complete venous circle).^[1]

The middle cardiac vein has a constant location on the surface of the ventricles.^[2]

The middle cardiac vein is useful for epicardial access to the inferior side of the ventricles.^[3]

^ ^a ^b Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). New York. p. 1093. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
^ Worley, Seth J. (2017-01-01), Ellenbogen, Kenneth A.; Wilkoff, Bruce L.; Kay, G. Neal; Lau, Chu-Pak (eds.), "30 - Coronary Sinus Lead Implantation", Clinical Cardiac Pacing, Defibrillation and Resynchronization Therapy (Fifth Edition), Elsevier, pp. 739–834, ISBN 978-0-323-37804-8, retrieved 2021-01-08
^ Issa, Ziad F.; Miller, John M.; Zipes, Douglas P. (2012-01-01), Issa, Ziad F.; Miller, John M.; Zipes, Douglas P. (eds.), "Chapter 27 - Epicardial Ventricular Tachycardia", Clinical Arrhythmology and Electrophysiology: A Companion to Braunwald's Heart Disease (Second Edition), Philadelphia: W.B. Saunders, pp. 608–617, ISBN 978-1-4557-1274-8, retrieved 2021-01-08

Anatomy figure: 20:04-05 at Human Anatomy Online, SUNY Downstate Medical Center - "Posterior view of the heart."