 Medieval philosophers also like to draw a distinction between the homogeneous and heterogeneous parts of Socrates’ body. Heterogeneous parts are such that, if they are themselves divided, their constituents are not of the same type as the original. For example, a hand is composed out of fingers, knuckles, and a palm. It is also, from another viewpoint, composed out of muscles, skin, and sinews. No part of the hand is a hand. However, some of the hand’s parts are homogeneous. Muscle, skin, and blood are each homogeneous, since every bit of muscle is muscle, every bit of blood is itself blood, and every bit of skin is also skin. 