Question

1. what is the water content of a healthy nail?

a) 5 to 10 percent
c) 15 and 25 percent
b) 10 and 20 percent
d) 20 and 30 percent

1. the average rate of nail plate growth in an adult is about

a) 1/10 to 1/8 inches (0.25 to 0.32 cm) per month.
b) 1/4 to 1/2 inch (1.3 to 1.9 cm) per month
c) 1/2 to 3/4 inches (1.3 to 1.9 cm) per week
d) 1/8 to 1/6 (0.32 to 0.42 cm) inch per week.

1. which of the following is not part of the perionychium?

a) the eponychium
c) the hyponychium
b) the distal phalanx
d) the paronychium

1. what does a longer matrix lead to?

a) a thinner nail plate
c) faster nail growth
b) nail grooves
d) a thicker nail plate

1. which of the following is not a natural nail shape?

a) acorn
c) olive
b) almond
d) date

Explanation:

• For question 21: A healthy nail has a water content of 15 - 25 percent.
• For question 22: The average rate of nail plate growth in an adult is about 1/10 to 1/8 inches (0.25 to 0.32 cm) per month.
• For question 23: The perionychium includes the eponychium, hyponychium, and paronychium. The distal phalanx is a bone in the finger, not part of the perionychium.
• For question 24: A longer matrix leads to a thicker nail plate as it is the area that produces nail cells.
• For question 25: Natural nail shapes include almond, olive, and date. Acorn is not a natural nail shape.

Answer:

1. C) 15 and 25 percent
2. A) 1/10 to 1/8 inches (0.25 to 0.32 cm) per month
3. B) the distal phalanx
4. D) a thicker nail plate
5. A) acorn