Hormonal changes during puberty cause some vellus hair to be replaced with terminal hair. Which is the hair type that increases?

Hormonal changes during puberty cause some vellus hair to be replaced with terminal hair. Which is the hair type that increases?

• A. Lanugo hair
• B. Terminal hair
• C. Vellus hair
• D. Club hair

Answer: (B)

Hormones surging at puberty signal certain follicles to switch fine, light vellus hairs into thicker, darker terminal hairs. This terminal hair is longer, coarser, and pigmented, and it increases in areas sensitive to androgens such as the face, underarms, and pubic region. Lanugo hair is fetal and normally shed before birth, and club hair is just a hair in the resting phase, not the type that grows in greater amounts during puberty.

Hormones surging at puberty signal certain follicles to switch fine, light vellus hairs into thicker, darker terminal hairs. This terminal hair is longer, coarser, and pigmented, and it increases in areas sensitive to androgens such as the face, underarms, and pubic region. Lanugo hair is fetal and normally shed before birth, and club hair is just a hair in the resting phase, not the type that grows in greater amounts during puberty.