Question

review properties of hair & scalp & d & d
multiple choice
identify the choice that best completes the statement or answers the question.

1. the greek word trichos means ______.

a. skin
b. fingernails
c. glands
d. hair

1. what part of the hair is located below the surface of the epidermis?

a. hair shaft
b. hair root
c. hair cuticle
d. hair medulla

1. the thickened, club - like structure that forms the lower part of the hair root is the ______.

a. cuticle layer
b. hair bulb
c. dermal papilla
d. arrector pili

1. a small, cone - shaped area located at the base of the hair follicle that fits into the hair bulb is the

a. hair follicle
b. hair strand
c. dermal papilla
d. dermal cuticle

1. the substance secreted by the sebaceous glands is called ______.

a. sebum
b. sulfur
c. sudoriferous
d. lymph

1. what is the oily substance secreted by the skin’s oil glands that lubricates the hair and skin?

a. keratin
b. sebum
c. mucous
d. helix

1. the body naturally produces ______ of the 20 amino acids that make up hair.

a. 3
b. 9
c. 11
d. all

Explanation:

Question 1

The Greek word "trichos" is related to hair. Among the options, "skin" (a), "fingernails" (b), and "glands" (c) are incorrect. The correct meaning is hair.

The hair root is located below the epidermis surface. The hair shaft (a) is above, the cuticle (c) is part of the shaft/root, and medulla (d) is inside the hair. So the hair root is the part below.

The hair bulb is the thickened, club - like structure at the lower part of the hair root. The cuticle layer (a) is part of the hair strand, dermal papilla (c) fits into the bulb, and arrector pili (d) is a muscle. So the hair bulb is correct.

Answer:

d. hair

Question 2