Ch 11 Flashcards

0
Q

The five main structures of the hair root include all of the following except the

A

Epidemis

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1
Q

The hair, skin, nails and glands are known collectively as the

A

Integumentary

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2
Q

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

A

Follicle

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3
Q

The thickened, club - like structure that forms the lower part of the hair root is the

A

Hair bulb

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4
Q

The substance secreted by the sebaceous glands is called

A

Sebum

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5
Q

The three growth cycles of human hair are

A

Anlagen , catagen and telogen

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6
Q

The resting phase or final phase of the hair cycle that lasts until the fully grown hair is she’d is the

A

Telogenic

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7
Q

The sudden falling out of hair in round patches or bald ness is spots is

A

Alopecia aerate

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8
Q

The technical term for gray hair is

A

Canities

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9
Q

The condition of abnormal hair growth of terminal hair is referred to as

A

Hypertrichosis

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10
Q

Trichoptilosis is the technical term for

A

Split ends

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11
Q

The medical term used to describe dandruff is

A

Pityriasis

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12
Q

Current research confirms that dandruff is the result of a fungus called

A

Malassezia

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13
Q

A severe type of dandruff characterized by an accumulation of greasy or waxy scalp scales mixed with sebum is

A

Pityriasis steatoidos

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14
Q

Tinea is characterized by itching scales and sometimes painful circular lesions and is caused by

A

Fungal organisms

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15
Q

A highly contagious skin disease caused by a parasite called a mite is

A

Scabies

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16
Q

An infestation of the hair and scalp with head lice is

A

Pediculosis capitis

17
Q

The small involuntary muscle in the base of the hair follicle is the

A

Arrestor pilli

18
Q

A lengthwise section of hair shown that cuticle scales overlap and each individual cuticle scale is attached to the

A

Cortex

19
Q

The medulla the innermost layer of the hair, is composed of cells that are

A

Round

20
Q

The hair shaft that emerges from the scalp is a non-living fiber composed of

A

Keratinized protein

21
Q

The major element that make up human hair are carbon oxygen, hydrogen, nitrogen and sulfur often referred to as the

A

Cottns elements

22
Q

The units of structure that build protein are joined together end to end like pop beads are

A

Amino acids

23
Q

Long chain of amino acids linked by peptide bonds is called

A

Polypeptide chain

24
Q

A physical side bond that easily broken by water and heat is a

A

Hydrogen bond

25
Q

A weak, physical , cross -link side bond between adjacent polypeptide chains that’s is broken by changes in ph is

A

Salt bond

26
Q

Permanent waving and hair relaxers change the shape of hair by chemically altering the hairs

A

Disulfide bonds

27
Q

Hydroxide chemical relaxers break disulfide bonds and convert them to

A

Lanthionine bonds

28
Q

The melanin that provides brown or black color to hair is

A

Eumelanin

29
Q

Is used to describe hairs wave pattern

A

Curly, straight and extremely curly

30
Q

The thickness or diameter of the individual hair strand is referred to as hair

A

Texture

31
Q

Hair that has the largest diameter and usually requires more processing is

A

Course hair

32
Q

The measurement that describes the number of individual hair strand on 1 square inch of the scalp is

A

Density

33
Q

The ability of the hair to absorb moisture is

A

Porosity

34
Q

Chemical services performed on hair with low porosity require a solution is

A

More alkaline

35
Q

The ability of hair to stretch and return to its original length without breaking is referred to as hair

A

Elasticity

36
Q

Hair flowing in the same direction, the result of follicles sloping in the same direction forms a

A

Hair stream

37
Q

Dry hair and scalp should be treated with products that contain moisturizers and

A

Emollients

38
Q

All natural hair color is the result of pigment located in the cortex called

A

Melanin

39
Q

Is a scalp disorder characterized by dry, sulfur-yellow , cup like crusts on the scalp

A

Tines favosa