Nails

Question 1

Free Edge

Answer 1

Function: ensures that all the nail bed is covered and therefore protected.
Anatomical Position: The hyponychium is the area of epithelium, particularly the thickened portion, underlying the free edge of the nail plate on the nail.

Question 2

Lunula

Answer 2

Function: primary structural role in defining the free edge of the distal nail plate
Anatomical Position: the end of the nail

Question 3

Cuticle

Answer 3

Function: a diffusion barrier limiting water and solute transport across the apoplast and for its protection of the plant against chemical and mechanical damage, as well as pest and pathogen attack
Anatomical Position: shed from the underside of the proximal nail fold as the nail grows

Question 4

Nail Root

Answer 4

Function: It produces most of the volume of the nail and the nail bed.
Anatomical Position: below the skin, underneath the nail, and extends several millimeters into the finger