Barbering Chapter 10 MiLady

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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


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