AORTA

Jack's Reference Book for Home and Office : An Encyclopaedia of General Information: Medical Dictionary · 1909 · p. 1

is the largest artery in the body. The outlet into it from the heart is guarded by valves, which in middlo life are prone to become impregnated with lime salts and in pea’ bec to be too rigid to act. Much extra work is thus thrown on the heart. This discase is known as Aortic Regurgitation. [s. 332]