<prompt> The right coronary aery arises from ?anterior aoic sinusleft posterior aoic sinusright posterior aoic sinusinter aoic sinus  <response>: Right coronary aery is smaller than the left coronary aery. It arises from the anterior aoic sinus. Left coronary aery is larger than the right coronary aery. It arises from the left posterior aoic sinus. REF : B D Chaurasias Human Anatomy , seventh edition , volume 2 , pg.no., 278, 279. FIG REF : B D Chaurasias Human Anatomy , seventh edition , volume 2 , pg.no., 278, 279. fig 18.22a and b . 