The most distal part of a nail is called the . the most proximal part of the nail that is embedded in the skin is the . the layer of edpidermis that is under the nail body is called the . the actively growing part of the nail is the . the whitish semilunar area of the proximal end of the nail body is the .

1.Free edge

2.Nail Root

3.Nail matrix

4.lunula

Note: The numbering coincides respectively with the dashes in the questions.

Explanation:

Free edge is the distal white nail ending.

Nail Root is the proximal part of the nail embedded in the skin.

Nail matrix is the actively growing part of the nail were the nail root thickens

Lunula the whitish semilunar area of the proximal end of the nail body it appears whitish because stratum basala obscures. the underlying blood vessels.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length