Hair Services
What term refers to the scientific study of hair and its diseases and care?
a. Trichology
b. Cosmetology
c. Selenology
d. Cartology
a. Trichology
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
b. hair bulb
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
b. Sebum
Which term refers to a layer that protects the hair from penetration and prevents damage to hair fibers?
a. Hair cuticle
b. Cortex
c. Hair follicle
d. Medulla
a. Hair cuticle
Hair is approximately _____ percent protein.
a. 30
b. 50
c. 70
d. 90
d. 90
The Greek word trichos means _____.
a. skin
b. fingernails
c. glands
d. hair
d. hair
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
c. dermal papilla
The body naturally produces _____ of the 20 amino acids that make up hair.
a. 3
b. 9
c. 11
d. all
c. 11
The fibrous protein core formed by elongated cells that contains melanin pigment is the _____.
a. cuticle
b. sebum
c. cortex
d. medulla
c. cortex
The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur, often referred to as _____.
a. COHNS elements
b. dermal foundation
c. amino acids
d. keratins
a. COHNS elements
The hair, skin, nails, and glands are part of the _____ system.
a. epidermal
b. integumentary
c. endocrine
d. lymphatic
b. integumentary
What structures contain the blood and nerve supply that provide the nutrients needed for hair growth?
a. Sebaceous glands
b. Dermal papillae
c. Hair bulbs
d. Furuncles
b. Dermal papillae
What is the outermost layer of hair?
a. Hair Follicle
b. Hair Medulla
c. Hair Cuticle
d. Hair Cortex
c. Hair Cuticle
The changes involved in oxidation haircoloring, wet setting, thermal styling, permanent waving, and chemical hair relaxing take place within the _____.
a. cuticle
b. cortex
c. medulla
d. dermal papilla
b. cortex
The units of structure that build protein and are joined together end to end like pop beads are _____.
a. oxygenated cells
b. primary acids
c. amino acids
d. lymph glands
c. amino acids
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
b. Hair root
The small, involuntary muscle fiber in the base of the hair follicle is the _____.
a. inner follicle
b. angled bulb
c. arrector pili
d. dermal papilla
c. arrector pili
Which layer of the hair shaft creates the shine and the smooth, silky feel of healthy hair?
a. Hair Cuticle
b. Arrector pili
c. Hair Cortex
d. Hair Medulla
a. Hair Cuticle
Hair is composed of protein that grows from cells originating within the _____.
a. hair bulb
b. hair follicle
c. dermal papilla
d. medulla layer
b. hair follicle
A long chain of amino acids linked by peptide bonds is called a _____ chain.
a. amino-peptide
b. polymer
c. keratin
d. polypeptide
d. polypeptide
The pocket or tube-like depression in the scalp or skin that contains the hair root is the hair _____.
a. bulb
b. follicle
c. shaft
d. dermal
b. follicle
The substance secreted by the sebaceous glands is called _____.
a. sebum
b. sulfur
c. sudoriferous
d. lymph
a. sebum
A lengthwise section of hair shows that cuticle scales overlap and each individual cuticle scale is attached to the _____.
a. medulla
b. melanin
c. cortex
d. root
c. cortex
The hair shaft that emerges from the scalp is a nonliving fiber composed of _____.
a. keratinized acids
b. hydrogen bonds
c. melanin protein
d. keratinized protein
d. keratinized protein
What substances are comprised of long, coiled, complex polypeptides made of amino acids?
a. Proteins
b. Carbohydrates
c. Keratins
d. Melanins
a. Proteins