Hair, Skin, and Nails

Question 1

• consists of layers of keratinized cells, found over much of the body except for the lips, nipples, soles of the feet, palms of the hands, labia minora, and penis.

Answer 1

Hair

Question 2

• There are two general types of hair:

Answer 2

• Vellus hair
• Terminal hair

Question 3

(peach fuzz) is short, pale, fine, and present over much of the body.

Answer 3

Vellus hair

Question 4

(particularly scalp and eyebrows) is longer, generally darker, and coarser than vellus hair.

Answer 4

Terminal hair

Question 5

ABCD rule

• A. Asymmetry, the two sides of the pigmented area do not match

B. border irregularity, exhibits indentations

C. color, contains several colors (black, brown, tan, sometimes red or blue)

D. diameter, larger than 6 mm (size of pencil eraser)

E. evolving or changing over time are characteristics of cancerous lesions.