Properties of the Hair and Scalp Flashcards
The hair, skin, nails, and glands are known collectively as the
integument
The five main structures of the hair root include all of the following except the
epidermis
he pocket or tube-like depression in the scalp or skin that contains the hair root is the
follicle
The thickened, club-like structure that forms the lower part of the hair root is th
hair bulb
A small, cone-shaped area located at the base of the hair follicle that fits into the hair bulb is the:
dermal papilla
The substance secreted by the sebaceous glands is called:
sebum
The tiny, involuntary muscle fiber in the skin inserted in the base of the hair follicle is the:
arrector pili
Which layer of the hair shaft creates the shine and the smooth, silky feel of healthy hair?
cuticle
A lengthwise section of hair shows that cuticle scales overlap and each individual cuticle scale is attached to the:
cortex
The fibrous protein core formed by elongated cells that contains melanin pigment is the:
cortex
The medulla, the innermost layer of the hair, is composed of cells that are:
round
Hair is composed of protein that grows from cells originating within the:
hair follicle
he hair shaft that emerges from the scalp is a nonliving fiber composed of:
keratinized protein
The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur, often referred to as the:
COHNS elements
The units of structure that build protein and are joined together end to end like pop beads are:
amino acids
A long chain of amino acids linked by peptide bonds is called a:
polypeptide chain
he three different types of side bonds are:
hydrogen, salt, and disulfide
A physical side bond that is easily broken by water and heat is a:
hydrogen bond
A weak, physical, cross-link side bond between adjacent polypeptide chains that is broken by changes in pH is a:
salt bond
Permanent waving and hair relaxers change the shape of hair by chemically altering the hair’s:
disulfide bonds
Hydroxide chemical relaxers break disulfide bonds and convert them to:
lanthionine bonds
All natural hair color is the result of pigment located in the cortex called:
melanin
The melanin that provides brown or black color to hair is:
eumelanin
Which of the following terms is used to describe hair’s wave pattern?
curly, extremely curly, straight
Vellus hair is the is short, fine, and downy hair also known as:
lanugo hair
The three growth cycles of human hair are:
anagen, catagen, and telogen
The resting phase or final phase of the hair cycle that lasts until the fully grown hair is shed is the:
telogen phase
The sudden falling out of hair in round patches or baldness in spots is:
alopecia areata
The technical term for gray hair is:
canities
The condition of abnormal hair growth of terminal hair is referred to as:
hypertrichosis
Trichoptilosis is the technical term for:
split ends
A condition that is characterized by brittleness and the formation of nodular swellings along the hair shaft is:
trichorrhexis nodosa
The medical term used to describe dandruff is:
pityriasis
Current research confirms that dandruff is the result of a fungus called:
malassezia
A severe type of dandruff characterized by an accumulation of greasy or waxy scalp scales mixed with sebum is:
pityriasis steatoides
Tinea is characterized by itching scales and sometimes painful circular lesions and is caused by:
fungal organisms
Which of the scalp disorders is characterized by dry, sulfur-yellow, cup-like crusts on the scalp?
tinea favosa
A highly contagious skin disease caused by a parasite called a mite is:
scabies
An infestation of the hair and scalp with head lice is:
pediculosis capitis
An acute, localized bacterial infection of the hair follicle that produces constant pain is a:
furuncle
The thickness or diameter of the individual hair strand is referred to as hair:
texture
Hair that has the largest diameter and usually requires more processing is:
coarse hair
The measurement that describes the number of individual hair strands on 1 square inch of the scalp is:
density
The ability of the hair to absorb moisture is:
porosity
Chemical services performed on hair with low porosity require a solution that is:
more alkaline
The ability of hair to stretch and return to its original length without breaking is referred to as hair:
elasticity
Hair flowing in the same direction, the result of follicles sloping in the same direction form a:
hair stream
Dry hair and scalp should be treated with products that contain :
moisturizers and emollients
The scientific study of hair and its diseases and care
Trichology
The part of the hair located below the surface of the epidermis
Hair root
The outermost layer of hair
Cuticle
An oily substance that lubricates the hair and skin
Sebum
The growth phase, during which new hair is produced
Anagen
The medical term for ringworm
Tinea
Temporary hair loss experienced at the end of a pregnancy
Postpartum alopecia
The technical term for brittle hair
Fragilitas crinium
Long, coiled, complex polypeptides made of amino acids
Proteins
Refers to the shape of the hair strand
Wave pattern
The Greek words trichos means
“hair.”
The body can produce
11 amino acids
The dermal papilla contains the blood and nerve supply that provides the nutrients needed for
hair growth.
The hair cuticle consists of an overlapping layer of transparent, scale-like cells that look like
shingles on a roof.
Hair is approximately what percent protein.
90 percent protein.
A peptide bond does not
reform
hydrogen bond is reformed by
drying or cooling
Pheomelanin provides
natural colors ranging from red and ginger to yellow and blond tones.
Vellus hair is not pigmented and almost never has a
medulla.
Complete body hair loss is called
alopecia universalis.
You should not perform a service on a client who has
seborrheic dermatitis.
