As we all know about in an ordinary form the fingernails are plates placed in the superior face of the extreme of the fingers of hands and feet. The surface of the skin covered by them is called the ungueal  bed.

The fingernail is surrounded by an area of skin “unguea lrodete”  and a zone of free growth.

The fissure that exists between the area of skin that surrounds the fingernail and the bed  is called “ungueal furrow.

The nearest edge to the cuticle zone is called the root of the nail. The visible part of the nail is called body of the nail and as we have previously stated it is surrounded by skin and it has a zone of free growth, this zone is called “distal portion” and it is extended forward, besides, it wears down in time or it is cut.

The aspect of the nail is semitransparent and permits that the color of the skin that lies under it shows up through it.

Stuck to the cuticle or the zone of the root, the fingernail has a whitish color and in the shape of a half moon, this half-moon normally is covered by the skin of the cuticle.

The plate of the nail is formed by dead remains of conical epithelial cells distributed in a  longitudinal form, that means lined in direction to the growth.

As the fingernail goes away forming itself in the matrix, it goes away moving forward the fingernail simply goes away sliding on the ungueal bed.

 Image anatom - a

A. Proximal fold

B. Cuticle

C. Lateral fold

D. Ungueal plate

E.Ungueal matrix

F. Lunule

G. Hiponiquio

 
 

 Image anatom - b

 A. Epidermis

B. Cuticle

C. Ungueal bed

D. Collagen fibers

E. Ungueal plate

F. Bone

G. Epidermis

H. Lateral border

I Hiponiquio