BLOOD-VESSELS

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

are of three kinds, (1) those which carry blood from the heart, which are named art erics; (2) those which blood back to the heart, which are named veins; and (3) thin walled and microscopic ve els connecting arteries and veins, which are called capillaries. In the capillaries the fluid part of the blood leaks into and nourishes the surrounding ti ues. [s. 337]