Chapter 9 Nail Structure & Growth

A normal, healthy nail surface _____.

• Is Completely Inflexible

• Has a Spotted Surface

• Is 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 Eight 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

• 10 and 45 Percent

• 15 and 25 Percent