Ch 9

Question 1

The natural nail is part of what system?

a. Muscular
b. Integumentary
c. Skeletal
d. Protective

Answer 1

b. Integumentary

Question 2

The natural nail is composed mainly of a hard, fiber-shaped _____.

a. protein
b. adipose tissue
c. matrix
d. eponychium

Answer 2

a. protein

Question 3

Which statement is true of the nail plate?

a. It requires oxygen.
b. It is made of living cells.
c. It is more porous than normal skin of equal thickness.
d. It is rigid and impermeable.

Answer 3

c. It is more porous than normal skin of equal thickness.

Question 4

As it grows, the _____ slides across the nail bed.

a. cuticle
b. nail plate
c. nail grooves
d. mantle

Answer 4

b. nail plate

Question 5

The nail plate is formed by the _____.

a. matrix cells
b. cuticle
c. mantle
d. grooves

Answer 5

a. matrix cells

Question 6

Which of the following may appear to be one solid piece, but is actually constructed of about 100
layers of nail cells? 
a.  Lunula 
b.  Nail bed 
c.  Nail folds 
d.  Nail plate

Answer 6

d. Nail plate

Question 7

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

a. cuticle area
b. nail body
c. free edge
d. extension

Answer 7

c. free edge

Question 8

The portion of living skin that supports the nail plate is the nail _____.

a. root
b. bed
c. groove
d. matrix

Answer 8

b. bed

Question 9

Which part of the nail unit is richly supplied with blood vessels and with nerves?

a. Lunula
b. Nail bed
c. Nail folds
d. Nail plate

Answer 9

b. Nail bed

Question 10

The nail bed contains many nerves and is attached to the nail plate with a thin layer of tissue called the _____.

a. bed eponychium
b. bed lunula
c. nail mantle
d. bed epithelium

Answer 10

d. bed epithelium

Question 11

Karen is very nervous at her first job interview. Her hands are sweating so much that she thinks her
fingernails are sweating. In reality, from which part of the nail unit is the sweat most likely arising?
a. Lunula
b. Nail bed
c. Nail folds
d. Nail plate

Answer 11

c. Nail folds

Question 12

Nail polish is applied to the _____.

a. lunula
b. nail bed
c. nail folds
d. nail plate

Answer 12

d. nail plate

Question 13

The area of the nail where the nail plate cells are formed is the _____.

a. extension
b. matrix
c. lunula
d. free edge

Answer 13

b. matrix

Question 14

The lighter color of the _____ shows the true color of the matrix.

a. lunula
b. nail bed
c. nail folds
d. nail plate

Answer 14

a. lunula

Question 15

The dead, colorless tissue attached to the natural nail plate is the _____.

a. ligament
b. eponychium
c. cuticle
d. lunula

Answer 15

c. cuticle

Question 16

The living skin at the base of the nail plate is the _____.

a. eponychium
b. hyponychium
c. free edge
d. bed epithelium

Answer 16

a. eponychium

Question 17

The slightly thickened layer of skin that lies between the fingertip and the free edge of the natural nail
plate is the \_\_\_\_\_. 
a.  eponychium 
b.  mantle 
c.  hyponychium 
d.  matrix

Answer 17

c. hyponychium

Question 18

When clipping his own nails, Jose accidentally (and painfully) clips the skin under the nail between the
fingertip and the free edge. What has he clipped?
a. Ligament
b. Hyponychium
c. Nail groove
d. Eponychium

Answer 18

b. Hyponychium

Question 19

The tough band of fibrous tissue that connects bones is the _____.

a. bed epithelium
b. ligament
c. open muscle
d. nail tendon

Answer 19

b. ligament

Question 20

The nail bed and matrix bed are attached to the underlying bone by _____.

a. ligaments
b. nail folds
c. nail grooves
d. eponychium cells

Answer 20

a. ligaments

Question 21

The skin that overlaps the side of the nail is called the _____.

a. lateral matrix
b. sidewall
c. nail wall
d. eponychium

Answer 21

b. sidewall

Question 22

Normal, healthy nails grow in a variety of shapes, depending upon the shape of the _____.

a. fingers
b. eponychium
c. matrix
d. free edge

Answer 22

c. matrix

Question 23

A longer nail matrix produces a _____ nail plate.

a. longer
b. shorter
c. thicker
d. thinner

Answer 23

c. thicker

Question 24

Nail growth rates increase dramatically during _____.

a. winter
b. old age
c. the last trimester of pregnancy
d. after pregnancy and the delivery of a baby

Answer 24

c. the last trimester of pregnancy

Question 25

As a person ages, parts of the nail matrix begin to permanently slow down production, causing _____.

a. nails to fall off with even slight injuries
b. death of the nail bed and cessation of nail growth
c. the development of nail ridges that should be filed away
d. the plate to develop a series of narrow grooves running down the length of the plate

Answer 25

d. the plate to develop a series of narrow grooves running down the length of the plate