Nail Structure Ch 9

A normal, healthy nail surface _____________.

• is completely inflexible

• is shiny and smooth

• has a spotted surface

• is white and opaque

The portion of the living skin that supports the nail plate as it grows toward the free edge is called the ____________.

• nail bed

• matrix

• ligament

• cuticle

The __________ is the whitish, half-moon shape underneath the base of the nail.

• lunula

• sidewall

• root

• free edge

The part of the nail plate that extends over the tip of the finger or toe is the __________ .

• free edge

• bed epithelium

• matrix

• sidewall

A ________ is a tough band of fibrous tissue that connects bones or holds an organ in place.

• ligament

• muscle

• tendon

• nerve

The ________ is the fold of skin overlapping the side of the nail.

• sidewall

• nail groove

• hyponychium

• eponychium

As long as the __________ is nourished and healthy, new nail plate cells will be created.

• lateral nail fold

• lunula

• matrix

• nail plate

Ordinarily, replacement of a natural fingernail takes about ______________.

• six to twelve months

• four to six months

• six to eight months

• two to eight months

the nail growth rate on the _______ is typically the slowest.

• the thumb

• middle finger

• pinkie finger

• index finger

The nail has a water content between _______

• 10 to 15 Percent

• 1 to 5 percent

• 20 to 45 percent

• 15 to 25 percent