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Flashcards in 11. Hair And Scalp Deck (69):
1

Tricholigy

THe scientific study of hair, it's disease and care

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Mature strand

Two parts are the hairs roots and hair shaft of human hair

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Hair follicle

The tube like depression or pocket in the skin or scalp that contains the hair root

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Hair follicles

Are not found in the soles of the feet

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Arrector pili muscle

The small involuntary muscle in the base of the hair follicle

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Sebum

The darth or oily substance secreted by the sebaceous glands

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Healthy cuticle

For chemicals to penetrate the hair layer must have the alkaline pit

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Medulla

Composed of round cells

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Anlagen phase

New hair is produced Becuase new cells are actively manufactured in the hair follicle

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Anagen phase

New hair is produced because new cells are actively manufactured in the hair follicle

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Major elements

That make up human hair are carbon oxygen hydrogen nitrogen and sulfur

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Peptide bonds

The strong chemical bonds that Join amino acids

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Pheomelanin

Provides natural colors ranging from red and finger to yellow and blond tones

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Asians

Tend to have extremely straight hair

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Minimize tangles

Use a detangling rinse when shampooing extremely curly hair

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Hair texture

Classified as course medium or fine

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Hair density

The measurement of the number of individual hair strands on kne square inch of the scalp

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Chemical services

Performed on hair with low proprietary required more alanine solutions

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Wet hair

With normal elasticity will stretch up to 50% of its original length and return to that length with out breaking

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Normalizing shampoo

Can treat oily hair and scalp by properly washing

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Vellus

Type of hair that almost never has a medulla

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Cartagena phase

The follicle canal shrink and detach from the dermal papilla

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Healthy scalp

The average growth is 1/2" per mo

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Canities

Grey hair

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Hypertrichosis

A condition of abnormal growth of terminal hair in areas of the body that normally grow only Vellus hair

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Pityriasis

Dandruff

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Dermal papilla

One of the main structures of the hair root that contains the blood and nerve supply that provides the nutrients needed for hair growth

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Salt bonds

Account for about 1/3 of the hairs overall strength

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Anlagen phase

Generally lasts from 3 to 5 years

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Scalp hair

Grows faster on woman than on men

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Catagen phase

The follicle canal shrank and detach from the dermal papilla

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Scalp massage

Does not increase hair growth g

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Gray hair

Exactly the same as pigmented hair

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Cross sections

Of hair can be almost any shape

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Bald men

Commonly perceived as less successful

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By age 35

Almost 40% of both men and woman show some degree of hair loss

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Finasteride

Oral prescription medication for hair loss that is meant for men only

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Congenital Canities

Exsist at or before birth

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Dandruff

Can easily be mistaken for dry scalp; result of fungus

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Keratinization

When the living cells of hair form and begin their journey upward through the hair follicle and they mature in a process

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Tinea

Characterized by itching, scales and sometimes painful circular lesions

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Pediculosis capitis

Head lice

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Carbuncle

Similar to a furuncle but is larger

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Fine hair

Is more fragile than course or medium hair

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Course hair

Stronger than fine hair

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Hair cuticle

The outermost layer of the hair

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Sebaceous gland

The oil glands in the skin that are connected to the hair follicles

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Hydrogen bonds

A weak physical cross link side bond easily broken by water or heat

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Hair

Approx 90% protein

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Alopecia totalis

Total scalp hair loss

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Hypertrichosis

Another name is hirsuties

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Malassezia

The naturally occurring fungus that causes the symptoms of dandruff when it grows out of control

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Hair bulb

The lowest part of the hair strand

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Monilethrix

Beaded hair

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Scabies

A highly contagious skin disease cause by a parasite called a more that borrows under the skin

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Helix

Spiral shape of a coil pattern

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Hair growth

Is not effected by shaving, clipping or cutting the hair on the head

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Scutula

Dry sulfer- yellow, crusts on the scalp

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Integumentary system

Hair skin nails and glands are part of this system

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Terminal hair

The long course pigmented hair found in the scalp legs arms and bodies of males and females

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Trichorrhexis nodosa

Knotted hair

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Medulla

The innermost layer of the hair and is composed of round cells

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Whorl

When hair leaves the follicles at the angle and forms patterns or streams on the head

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Cowlick

A particular pattern of hair stream that is aurally more noticeable on the front hairline in people with short thick hair

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Hair porosity

The ability of the hair to absorb moisture

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Cortex

The middle layer of the hair

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Alopecia areata

An auto immune disorder that causes the affected hair follicles to be mistakenly attacked by a persons own immune system

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Vellus hair

Lanugo hair

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Tinea

Ring worm