<prompt> All of the following open into right atrium exceptAnterior cardiac veinVenae cordis minimiCoronary sinusMiddle cardiac vein  <response>: Middle cardiac vein accompanies the posterior interventricular aery and joins the middle pa of coronary sinus B D CHAURASIAS HUMAN ANATOMY UPPER LIMB THORAX-VOLUME 1 SIXTH EDITION Page no:255,267 