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71 Cards in this Set
- Front
- Back
The scientific study of hair, its diseases, and care is called |
trichology |
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The two parts of a mature strand of human hair are the |
hair root and hair shaft |
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The tube-like depression or pocket in the skin or scalp that contains the hair root is the |
hair follicle |
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Hair follicles are not found on the |
soles of the feet |
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The _______ is the small, involuntary muscle in the base of the hair follicle. |
arrector pili muscle |
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The fatty or oily substance secreted by the sebaceous glands is _________. |
sebum |
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For chemicals to penetrate a healthy cuticle hair layer, they must have ________. |
an alkaline pH |
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The medulla is composed of _________ cells. |
round |
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During the ________ phase, new hair is produced because new cells are actively manufactured in the hair follicle. |
anagen |
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The major elements that make up human hair are carbon, oxygen, hydrogen, ____________. |
nitrogen and sulfur |
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The strong, chemical bonds that join amino acids are called __________. |
peptide bonds |
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Which type of melanin provides natural colors ranging from red and ginger to yellow and blond tones? |
pheomelanin |
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Asians tend to have __________ hair. |
straight |
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To help minimize tangles in extremely curly hair when shampooing, you should use __________. |
a detangling rinse |
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Hair texture is classified as _________. |
coarse, medium, or fine |
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The measurement of the number of individual hair strands on one square inch (2.5 square centimeters) of the scalp is __________. |
hair density |
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Compared to hair with high porosity, chemical services performed on low porosity hair require __________. |
more alkaline solutions |
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Wet hair with normal elasticity will stretch up to ___________ of its original length and return to that length without breaking. |
50 percent |
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Oily hair and scalp can be treated by properly washing with a _________. |
normalizing shampoo |
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Which type of hair almost never has a medulla? |
vellus |
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During which phase does the follicle canal shrink and detach from the dermal papilla? |
catagen |
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Scalp massage _________ hair growth. |
does not increase |
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Compared to pigmented hair, gray hair is __________. |
exactly the same |
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Cross-sections of hair __________. |
can be almost any shape |
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Bald men are commonly perceived as ___________. |
less successful |
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By age 35, almost _______ percent of both men and women show some degree of hair loss |
40 |
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The average growth of health scalp hair is ________. |
1/2 inch (1.25 centimeters) per month |
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The technical term used to describe gray hair is _________. |
cantities |
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A condition of abnormal growth of terminal hair in areas of the body that normally grow only vellus hair is _________. |
hypertrichosis |
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The technical term for dandruff is _________. |
pityriasis |
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Which of the five main structures of the hair root contain the blood and nerve supply that provides the nutrients needed for hair growth ? |
dermal papilla |
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Because there are so many of them, salt bonds account for about __________ of the hair’s overall strength. |
one-third |
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The anagen phase generally lasts from three to five _________. |
years |
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Scalp hair grows __________ on women and men. |
faster |
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The __________ phase signals the end of the growth phase. |
catagen |
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Finasteride is an oral prescription medication for hair loss that is meant for ___________. |
men only |
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The ___________ is the outermost layer of the hair. |
hair cuticle |
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The oil glands in the skin that are connected to the hair follicles are the _________ glands. |
sebaceous |
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A _________ bond is a weak, physical, cross-link side bond easily broken by water or heat. |
hydrogen |
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Hair is approximately _____ percent protein. |
90 |
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Total scalp hair loss is known as __________________. |
alopecia totalis |
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Congenital canities exists _____________. |
at or before birth |
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Dandruff can easily be mistaken for _________. |
dry scalp |
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Current research confirms that dandruff is the result of a ________. |
fungus |
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When the living cells of hair form and begin their journey upward through the hair follicle, they mature in a process called __________. |
keratinization |
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Tinea is characterized by ____________, scales, and sometimes painful circular lesions. |
itching |
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The infestation of the hair and scalp with head lice is called _________. |
pediculosis capitis |
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A carbuncle is similar to a furuncle but is ________. |
larger |
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Fine hair is _________ than coarse or medium hair. |
more fragile |
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Coarse hair ________. |
is stronger than fine hair |
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Hypertrichosis is also known as ____________. |
hirsuties |
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The technical term for knotted hair is __________________. |
trichorrhexis nodosa |
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The __________ is the innermost layer of the hair and is composed of round cells. |
medulla |
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When hair leaves the follicles at an angle and forms patterns or streams on the head, it is called ____________. |
a whorl |
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The part of the hair located below the surface of the epidermis is the _________. |
hair root |
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A particular pattern of hair stream that is usually more noticeable on the front hairline in people with short, thick hair is a __________. |
cowlick |
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The ability of the hair to absorb moisture is called ___________. |
hair porosity |
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The middle laver of the hair is the _________. |
cortex |
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An autoimmune disorder that causes the affected hair follicles to be mistakenly attacked by a person's own immune system is __________. |
alopecia areata |
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Vellus hair is also known as _________. |
lunuga hair |
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The technical term for ringworm is ________. |
tinea |
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The naturally occurring fungus that causes the symptoms of dandruff when it grows out of control is _________. |
malassezia |
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‘ |
‘ |
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The _________ is the lowest part of a hair strand. |
hair bulb |
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The technical term for beaded hair is ____________. |
monilethrix |
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A highly contagious skin disease caused by a parasite called a mite that burrows under the skin is __________. |
scabies |
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The term for the spiral shape of a coiled protein is _________. |
helix |
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Shaving, clipping, and cutting the hair on the head __________. |
has no effect on hair growth |
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Dry, sulfur-yellow, cuplike crusts on the scalp are called __________. |
scutula |
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The ___________ are part of the integumentary system. |
hair, skin, nails, and glands |
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The long, coarse, pigmented hair found on the scalp, legs, arms, and bodies of males and females is called __________. |
terminal hair |