Nail Structure and Growth

What is the technical term for the natural nail?

• Lunula

• Matrix

• Onyx

• Mantle

The water content of the nail is between ____________.

• 5 and 10 percent

• 15 and 25 percent

• 30 and 40 percent

• 45 and 55 percent

The water content of a nail directly affects the nail’s ________________.

• color

• length

• thickness

• flexibility

The nail unit consists of basic parts, which are the nail bed, matrix, nail plate, and _________.

• cuticle, folds, ligaments, lunula, and free edge

• cuticle, eponychium, paronychium, hyponychium, specialized ligaments, and nail folds

• onyx, bed epithelium, nail folds, and free edge

• cuticle, nail folds, eponychium, hyponychium, and free edge

The hardened keratin structure covering the nail bed is the ________________ .

• nail extension

• nail plate

• matrix

• lunula

The most visible and functional part of the nail unit is called the ______________.

• nail root

• nail fold

• nail plate

• cuticle

The nail plate is constructed of approximately how many layers of nail cells?

• 50

• 75

• 100

• 125

The end portion of the nail plate that reaches over the fingertip is called the ______________.

• nail root

• nail extension

• nail body or plate

• free edge

The blood vessels that provide nourishment for growth of the nail are found in the _____________.

• nail body

• nail root

• nail bed

• free edge

What is the thin layer of tissue that attaches the nail plate and the nail bed?

• Bed epithelium

• Eponichium

• Cuticle

• Free edge