Question

question 49 (1 point)
vellus hair is also known as ____ hair.
a melamine
b straight
c terminal
d lanugo

question 50 (1 point)
the slightly thickened layer of skin that lies between the fingertip and the free edge of the natural nail plate is the ____.
a hyponychium
b mantle
c matrix
d eponychium

question 51 (1 point)
____ refers to a fungal infection of the nail.
a onychocryptosis
b onychopathology
c onychomycosis
d onychophagy

Explanation:

Question 49

Vellus hair is fine, short, and unpigmented hair, and it is also known as lanugo (in the context of hair types, especially in relation to body hair and fetal hair). Melamine is a chemical compound, straight is a hair texture, and terminal hair is coarser, longer hair. So the correct option is d.

The hyponychium is the slightly thickened layer of skin between the fingertip and the free edge of the natural nail plate. The mantle is the fold of skin around the base of the nail, the matrix is the area where nail growth occurs, and the eponychium is the cuticle. So the correct option is a.

Onychomycosis is the term for a fungal infection of the nail. Onychocryptosis is an ingrown nail, onychopathology is the study of nail diseases, and onychophagy is nail - biting. So the correct option is c.

Answer:

d. lanugo

Question 50