cortices. 1  1a (1) : the outer or superficial part of an organ or bodily structure (such as the kidney, adrenal gland, or cerebellum or a bone); especially : cerebral cortex (2) : the proteinaceous usually pigmented layer of a hair below the cuticleb : the outer part of some organisms (such as paramecia)
If a toenail has completely fallen off, it can take up to 18 months for it to grow back. A toenail can take longer to grow back if the nail bed has permanent damage. In some cases, old nails do not completely fall off, and they act as a protective...
Thus the plate does not glide over the bed epithelium but is firmly attached to it in a parellel course.. Nails grow at an average rate of 0.1mm a day (1 cm every 100 days) Fingernails require 4 to 6 months to regrow completely. Toenails require 12 to 18 months.