Chapter 9

Question 0

15 and 25% affects nail flexibility.

Answer 0

Water content of nail

Question 1

Hard protective plate composed mainly of keratin. Part of integumentary system.

Answer 1

Natural nail

Question 2

Composed of several major parts; nail plate nail bed matrix nail cuticle eponychium hyponychium specialized ligaments and nail folds

Answer 2

Natural nail unit composed of what

Question 3

A hardened keratin plate that sits on and covers the nail bed. Most visible and functional part. Constructed of 100 layers.

Answer 3

Nail plate

Question 4

Part of nail plate that extends over tip of finger

Answer 4

Free edge

Question 5

Portion of living skin supports nail plate as it grows

Answer 5

Nail bed

Question 6

Thin layer of tissue that attaches the nail plate and bed

Answer 6

Bed epithelium

Question 7

Area where nail plate cells are formed; contains nerves, lymph and blood vessels to nourish matrix cells. Extends from under the nail fold at base of the nail plate

Answer 7

Matrix

Question 8

Visible part of matrix that extends from underneath the living skin; white half moon at base of nail

Answer 8

Lunula

Question 9

Dead colorless tissue attached natural nail plate

Answer 9

Nail cuticle

Question 10

The living skin at the base of the natural nail plate that covers matrix. Living tissue that grows up to the nail plate

Answer 10

Eponychium

Question 11

Dead tissue adheres to nail plate

Answer 11

Cuticle

Question 12

Slightly thickened layer of skin that lies between the fingertip and free edge of he natural nail plate

Answer 12

Hyponychium

Question 13

Tough band of fibrous tissue that connects bones or holds an organ in place. Located at base of matrix and around wedges if nail bed

Answer 13

Ligament

Question 14

Folds of normal skin that surround nail plate. Golds form grooves.

Answer 14

Nail folds

Question 15

Slits or furrows on the side wall.

Answer 15

Nail grooves

Question 16

Also knows at lateral nail fold. Fold of skin overlapping side of nail.

Answer 16

Side wall

Question 17

Average rate of nail growth

Answer 17

1/10 inch per month. Age affects nail growth.