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

19
Q

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

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
A physical side bond that easily broken by water and heat is a
Hydrogen bond
25
A weak, physical , cross -link side bond between adjacent polypeptide chains that's is broken by changes in ph is
Salt bond
26
Permanent waving and hair relaxers change the shape of hair by chemically altering the hairs
Disulfide bonds
27
Hydroxide chemical relaxers break disulfide bonds and convert them to
Lanthionine bonds
28
The melanin that provides brown or black color to hair is
Eumelanin
29
Is used to describe hairs wave pattern
Curly, straight and extremely curly
30
The thickness or diameter of the individual hair strand is referred to as hair
Texture
31
Hair that has the largest diameter and usually requires more processing is
Course hair
32
The measurement that describes the number of individual hair strand on 1 square inch of the scalp is
Density
33
The ability of the hair to absorb moisture is
Porosity
34
Chemical services performed on hair with low porosity require a solution is
More alkaline
35
The ability of hair to stretch and return to its original length without breaking is referred to as hair
Elasticity
36
Hair flowing in the same direction, the result of follicles sloping in the same direction forms a
Hair stream
37
Dry hair and scalp should be treated with products that contain moisturizers and
Emollients
38
All natural hair color is the result of pigment located in the cortex called
Melanin
39
Is a scalp disorder characterized by dry, sulfur-yellow , cup like crusts on the scalp
Tines favosa