Barbering Chapter 10 MiLady
The chemical composition of normal hair is _____ percent carbon.
51
At any given time, about ______ percent of scalp hair is in the Anagen phase.
90
Protein makes up approximately _____ percent of human hair.
90
The result of follicles being arranged and sloping in a uniform manner is called ______.
A hair stream
Finasteride is _______.
An oral medication for hair loss
During which phase is new hair produced?
Anagen
__________ is hair loss that occurs as a result of genetics, age, and hormonal changes that cause the miniaturization of terminal hair, converting it to vellus hair.
Androgenic alopecia
Alopecia is the technical term for ______.
Any abnormal hair loss
Alopecia _______ is characterized by the sudden falling out of hair in round patches.
Areata
The technical term for a _____ is furuncle.
Boil
_____ is the technical term for gray hair.
Canities
During the _______ phase, the hair bulb disappears.
Catagen
Hair with a ______ texture has the largest diameter
Coarse
The _______ accounts for about 90 percent of the total weight of the hair.
Cortex
A tuft of hair standing straight up is known as a _______.
Cowlick
________ may stretch up to 50 percent of its original length and return to that length without breaking.
Curly or wavy hair
The _____ consists of a single overlapping layer of transparent, scale-like cells that look like shingles on a roof.
Cuticle
Disulfide bonds join the sulfur atoms of two neighboring _______ amino acids to create one Cystine.
Cysteine
_______ on the scalp are symptoms of tinea favosa.
Dry, sulfur-yellow, cuplike crusts
Amino acids are made of ________
Elements
Amino acids are joined _____ in a definite order by peptide bonds.
Endtoend
Black and brown hair colors are provided by _______.
Eumelanin
Sebum production is not affected by ________.
Exercise
African Americans tend to have ______ hair.
Extremely curly
Which type of hair often has low elasticity, breaks easily, and has a tendency to knot, especially on the ends?
Extremely curly
Asians and native Americans tend to have ______ hair.
Extremely straight hair
Sycosis vulgaris, _________, and pseudofolliculitis barbae are staphylococcal infections involving the follicles.
Folliculitis barbae
Brittle hair is technically known as ______.
Fragilitas crinium
______ that stick to the scalp in patches are characteristics of pityriasis steatoides.
Greasy or waxy scales
The essential elements in human _____ are sulfur, carbon, oxygen, hydrogen, and nitrogen.
Hair
Trichology is the scientific study of: _____ it's disorders, and it's care.
Hair
Within the _______, polypeptide chains are cross-linked by side bonds.
Hair cortex
The dermal papilla is surrounded by the ___________
Hair follicle
The portion of the hair that is enclosed within the follicle beneath the skin surface is the ________
Hair root
The portion of the hair that extends above the skin surface is the ________
Hair shaft
_______ side bonds are easily broken by water or heat.
Hydrogen
Thioglycolate permanent waves and _______ chemical hair relaxers break disulfide bonds.
Hydroxide
_______ is abnormal hair growth and can be treated in the barbershop.
Hypertrichosis
The average growth rate of healthy hair on the scalp is about 1/2 _______
Inch per month
The arrest or pili is a minute, _____ in the skin attached to the base of the hair follicle.
Involuntary muscle fiber
Fine hair _________.
Is more susceptible to damage from chemical services
Scalp irritation, ______, and an itchy scalp are characteristic of pityriasis capitis simplex.
Large flakes
Resistant hair has _______ porosity.
Low
The hair bulb forms the _______.
Lower part of the hair root
Androgenic alopecia in men is also called ______.
Male pattern baldness
Hair texture is measured by the diameter of the hair strand and is classified as coarse, _______, or fine.
Medium
Natural hair Color is the result of the _____ pigment found within the cortex.
Melanin
The cortex is the _____ layer of the hair
Middle
______ is a topical treatment that is applied to the scalp twice a day to stimulate hair growth.
Minoxidil
Hair that is missing the medulla is ______
Naturally blond
Salt bonds depend on pH and account for _______ of the hairs total strength.
One third
The two most common parasitic infestations barbers may see in the barbershop are ______ and scabies.
Pediculosis capitis
Hair density refers to the number of individual hair strands ______ of scalp area.
Per square inch
Red and ginger to yellow and light blond hair colors are provided by ________.
Pheomelanin
Dandruff is technically known as ______.
Pityriasis
The hairs ______ is the ability of the hair to absorb moisture.
Porosity
The chief component of hair is a ______ called keratin.
Protein
The polypeptide chains intertwine around each other to create the spiral shape of a coiled ________.
Protein
Pseudofolliculitis barbae is also referred to as ______.
Razor bumps
The hair feels _______ when you move your thumb and fingers from its end to the scalp.
Rough
Swelling the hair with high-PH products raises the cuticle layer and opens the spaces between the ______.
Scales
The _______ glands secrete sebum.
Sebaceous
Hair _____ mature through a process called keratinization
Shafts
Ellis, or lanugo, hair is ______ and in adults is found in places normally considered hairless.
Short and fine
The three types of ________ bonds are hydrogen, salt, and disulfide bonds.
Side
Disulfide bonds are the _____ side bonds in the cortex.
Strongest
During the ______ phase, the hair is either shed or remains in place until it is pushed out by the growth of a new hair.
Telogen
Terminal hair is found on _______.
The arms
The dermal papilla contains the blood and nerve supply that provides _______ needed for the hair growth
The nutrients
Hair growth is not increased by any of the following except ________.
The time of the year
The hair shaft consists of _______ main layers
Three
_____ is ringworm of the bearded area.
Tinea sycosis
Split ends are called?
Trichoptilosis
What term can be described as straight, wavy, curly or extremely curly?
Wave pattern