ch 9/5 Nail Structure & growth

Indicate whether the statement is true or false. The appearance of the nails can reflect the general health of the body.

• True

• False

Indicate whether the statement is true or false. The keratin in natural nails is softer than the keratin in hair.

• True

• False

Indicate whether the statement is true or false. The water content of a healthy nail is between 5 and 10 percent.

• True

• False

Indicate whether the statement is true or false. Nail plates need oxygen, vitamins, and minerals.

• True

• False

Indicate whether the statement is true or false. Toenails are thicker and harder than fingernails because the toenail matrix is longer than the fingernail matrix.

• True

• False

Indicate whether the statement is true or false. Ordinarily, replacement of a natural toenail takes about 4 to 6 months.

• True

• False

The natural nail is part of what system?

• muscular

• integumentary

• skeletal

• protective

The water content of the natural nail directly affects the nail’s:

• length

• grooves

• flexibility

• color

Identify the choice that best completes the statement or answers the question. The most visible and functional part of the nail unit is the:

• nail bed

• nail plate

• nail grooves

• nail mantle

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

• 50

• 75

• 80

• 100