Question

1. identify a characteristic of a healthy nail.

a) it is soft but inflexible.
b) it has 50 to 75 percent water content.
c) its surface is generally spotted and has deep grooves.
d) it is translucent, and the beige or pinkish color of the nail bed shows through.

1. the nail bed, nail fold, eponychium, paronychium, and hyponychium are collectively referred to as the _.

a) cuticle
b) bed epithelium
c) perionychium
d) lunula

1. the _ is the whole skin flap that covers the matrix, from the visible nail edge to the first joint of the finger or toe.

a) proximal nail fold
b) bed epithelium
c) perionychium
d) lateral nail fold

1. the _ is the section of living skin that supports the nail plate as it extends to the free edge.

a) cuticle
b) eponychium
c) nail matrix
d) nail bed

1. which of the following statements is true of the nail plate?

a) it is the hardened keratin plate that rests on top of the nail bed.
b) it is the least visible and functional part of the nail unit.
c) it is formed by melanocytes.
d) it is water - resistant.

1. the _ is part of the natural nail that contains nerves, blood vessels, and nourish cells that differentiate and become keratinized to form the nail plate.

a) cuticle
b) matrix
c) hyponychium
d) eponychium

Explanation:

• Question 6: A healthy nail is translucent, and the beige or pinkish color of the nail bed shows through. A healthy nail is not soft and inflexible (A is wrong), has about 15 - 25 percent water content (B is wrong), and a healthy nail surface is smooth (D is wrong).
• Question 7: The nail bed, nail fold, eponychium, paronychium, and hyponychium are collectively referred to as the perionychium. The cuticle (A) is a different part, bed epithelium (B) is not the collective term, and lunula (D) is the half - moon - shaped part at the base of the nail.
• Question 8: The proximal nail fold is the whole skin flap that covers the matrix, from the visible nail edge to the first joint of the finger or toe. Bed epithelium (B) is not this structure, perionychium (C) is a collective term, and lateral nail fold (D) is on the sides.
• Question 9: The nail bed is the section of living skin that supports the nail plate as it extends to the free edge. The cuticle (A) is at the base, eponychium (B) is part of the proximal nail fold, and nail matrix (C) is where nail cells are produced.
• Question 10: The nail plate is the hardened keratin plate that rests on top of the nail bed. It is the most visible part (B is wrong), formed by matrix cells (not melanocytes, C is wrong), and is not highly water - resistant (D is wrong).
• Question 11: The matrix is part of the natural nail that contains nerves, blood vessels, and nourish cells that differentiate and become keratinized to form the nail plate. The cuticle (A) is a protective layer, hyponychium (C) is under the free edge, and eponychium (D) is part of the proximal nail fold.

Answer:

1. D. It is translucent, and the beige or pinkish color of the nail bed shows through.
2. C. perionychium
3. A. proximal nail fold
4. D. nail bed
5. A. It is the hardened keratin plate that rests on top of the nail bed.
6. B. matrix