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9 Cards in this Set

  • Front
  • Back

Function

Protective plate


Counterforce to fingertip to increase sensory input of touch

Nail root

aka Germinal matrix


lies beneath skin and behind fingernail


Extends several mm into finger


Produces most of the volume of the nail and nail bed


Its edge is the white, crescent shaped structure called the lunula/lunule

Nail bed

aka sterile matrix


Extends from the edge of the lunula to the hyponychium


Contains the blood vessels, nerves, and melanocytes

Nail plate

Actual finger nail


Composed of translucent keratin


Blood vessels underneath give the nail its pink appearance


Grooves along the inner length of the nail plate anchor the nail to the nail bed

Eponychium (cuticle)

Between the skin of the finger and the nail plate Fuses the skin to the nail plate

Perionychium (Paronychial edge)

Skin overlying the nail plate on its sides


Site of hangnails, ingrown nails, and paronychia

Hyponychium

Junction between the free edge of the nail and the skin

Finger nail growth

3mm/month

Toe nail growth

1mm/ month