A nail is a claw-like plate at the tip of the fingers and toes in most primates. Nails correspond to claws found in other animals. Fingernails and toenails are made of a tough protective protein called alpha-keratin, which is a polymer. Alpha-keratin is found in the hooves, claws, and horns of vertebrates. Three major parts of our nails are: 1) The Eponychium (cuticle) forms the first seal of the nail as it protrudes from our fingers. 2) The Paronychium is […]