I cannot figure out this science question for my homework can anyone help me?

Question

a man got his finger caught in a machine at the factory. The damage was less serious than expected, but nontheless, the entire nail was torn fro his right index finger, The parts lost were the body, root, bed, matrix, and cuticle of the nail. First, define each of these parts. Then, tell if this nail is likely to grow back.

Answer 1

Just give an explanation of what each part is.

Although if the root is gone it wont grow back.