Chapter 10 final

Cowlick

A tuft of hair standing straight up is known as a _________.

Extremely curly

African Americans tend to have _________ hair.

Areata

Alopecia _________ is characterized by the sudden falling out of hair in round patches.

Any abnormal hair loss

Alopecia is the technical term for _________.

Male pattern baldness

Androgenic alopecia in men is also called ______.

Extremely straight

Asians and Native Americans tend to have _______ hair.

90

At any given time, about ___________ percent of scalp hair is in the anagen phase.

Eumelanin

Black and brown hair colors are provided by __________.

Fragilitas crinium

Brittle hair is technically known as ___________.

Pityriasis

Dandruff is technically known as ___________.

Catagen

During the _________ phase, the hair bulb disappears.

Telogen

During the _____________ phase, the hair is either shed or remains in place until it is pushed out by the growth of a new hair.

Anagen

During which phase is new hair produced?

An oral medication for hair loss

Finasterife is __________.

Shafts

Hair _________ mature through a process called keratinization.

The time of the year

Hair growth is not increased by any of the following except _____________.

Naturally blond

Hair that is missing the medulla is _________.

The average growth rate of healthy hair on the scalp is about 1/2 __________.

Inch per month

Melanin

Natural hair color is the result of the ________ pigment found within the cortex.

90

Protein makes up approximately ________ percent of human hair.

Pheomelanin

Red and ginger to yellow and light blond hair colors are provided by _________.

Large flakes

Scalp irritation, ________, and an itchy scalp are characteristic of pityriasis capitis simplex.

Exercise

Sebum production is not affected by __________.

Trichoptilosis

Split ends are called _________ .

Scales

Swelling the hair with high-pH products raises the cuticle layer and opens the spaces between the _________, allowing liquids to penetrate into the cortext.

The arms

Terminal hair is found on _________.

Cortex

The ____ accounts for about 90 percent of the total weight of the hair.

Sebaceous

The ________ glands secrete sebum.

Cuticle

The _________consists of a single overlapping layer of transparent, scale-like cells that look like shingles on a roof.

involuntary muscle fiber

The arrector pili is a minute, ___________ in the sky attached to the base of the hair follicle.

51

The chemical composition of normal hair is __________ percent carbon.

Protein

The chief component of hair is a ________ called keratin.

Middle

The cortex is the ___________ layer of the hair.

hair follicle

The dermal papilla is surrounded by the _______.

The nutrients

The dermal papillary contains the blood and nerve supply that provides ___________ needed for hair growth.

Hair

The essential elements in human __________ are sulfur, carbon, oxygen, hydrogen, and nitrogen.

Lower part of the hair root

The hair bulb forms the _________.

Smooth

The hair feels _________ when you move your thumb and fingers from its end to the scalp.

Three

The hair shaft consists of _________ main layers.

Hair root

The portion of the hair that is enclosed within the follicle beneath the skin surface is the __________.

Hair shaft

The protion of the hair that extends above the skin surface is the ________.

A hair stream

The result of follicles being arranged and sloping in a uniform manner is called _________.

Hair

Trichology is the scientific study of ________, its disorders, and its care.

Short and fine

Vellus, or lanugo, hair is _________ and in adults is found in places normally considered hairless.

Wave pattern.

What term can be described as straight, wavy, curly, or extremely curly?

Extremely curly.

Which type of hair often has low elasticity, brakes easily, and has a tendency to knot, especially on the ends?

Tinea sycosis

_____ is ringworm of the bearded area.

Minoxidil

_________ is a topical treatment that is applied to the scalp twice a day to stimulate hair growth.

Canities

_________ is the technical term for gray hair.

Dry, sulfur-yellow, cuplike crust

_________ on the scalp are symptoms of tinea favosa.

Greasy or waxy scales

_________ that stick to the scalp in patches are characteristic of pityriasis steatoides.

Hypertrichosis

__________ is abnormal hair growth and can be treated in the barbershop.

Androgenic Alopecia

__________ 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.