Ch. 9-Nail Structure and Growth-EW

A normal, healthy nail surface _______.

• is completely inflexible

• has a spotted surface

• as shiny and smooth

• 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

• cuticle

• matrix

• ligament

The ______is the whitish, half moon shape underneath the base of the nail.

• sidewall

• lunula

• root

• free edge

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

• free edge

• matrix

• bed epithelium

• sidewall

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

• muscle

• ligament

• tendon

• nerve

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

• eponychium

• hyponychium

• nail groove

• sidewall

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 ight months

The nail growth rate on the ______is typically the slowest.

• thumb

• middle finger

• pinkie finger

• index finger

The nail has a water content between ______.

• 10 and 15 percent

• 1 and 5 percent

• 20 and 45 percent

• 15 and 25 percent