The right coronary aery arises from ?: (A) anterior aoic sinus, (B) left posterior aoic sinus, (C) right posterior aoic sinus, (D) inter aoic sinus
Answer is A. 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 Chaurasia's Human Anatomy , seventh edition , volume 2 , pg.no., 278, 279. FIG REF : B D Chaurasia's Human Anatomy , seventh edition , volume 2 , pg.no., 278, 279. ( fig 18.22a and b ).