Chapter 11 Test Questions Flashcards Preview

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Flashcards in Chapter 11 Test Questions Deck (40)
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1. Trichologogy is the scientific study of ____ including its care and disorders.

Hair

1

2. The main component of the hair is a ________ called keratin.

Protein

2

3. The part of the hair that extends above the skin surface is the ______.

Hair shaft

3

4. The demal papilla is surrounded by the _________.

Hair follicle

4

5. Hairs natural tendency to flow to one side is called the ________

Hair stream

5

6. The hair bulb is the ______

Lower part if the hair root

6

7. The arrector pilli is a minute _____ in the skin attached to the underside and base of the hair follicle

Involuntary muscle fiber

7

8. The hair shaft consist of _______ main shafts.

Three

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9. Sweeping the hair raises the ______ of the cuticle layer and opens the space between them allowing liquid to penetrate.

Scales

9

10. Oxidation tints and other chemical hair products must have a pH _______

Above 7.0

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11. The ________ accounts for about 90 percent of the hairs weight

Cortex

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12. Hair that is missing the medulla is ________

Naturally Blond

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13. Hair ______ mature in a process called keratinization.

Shafts

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14. The element in human hair ______ are sulfur, Carbon, oxygen, hydrogen, and nitrogen.

Skin

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15 _________ are made up of amino acids

Proteins

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16. The strongest chemical bond in the cortex are ________ bonds.

Peptide

16

17. When __________ bonds are broken through over stretching or the use of strong acidic or alkaline solutions, the human hair can be weakened or damaged to the point of breakage.

Even a few

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18. Hydrogen bonds add__________ to the hair and keep parallel polypeptide chains together.

Body

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19. Hydrogen bonds may be broken by _______

all answers are correct

19

20. Disulfide bonds are the _______ side bonds in the cortex

Strongest

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21. The atom of neighboring _______ amino acids that are joined together by disulfide bonds are atoms of sulfur

Cystine

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22. Black and brown hair color are provided by ________

Eumelanin

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23. Red through light blond color hair is provided by __________

Pheomelanin

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24. Blonds must have approximately _______ hairs on the head.

140,000

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25. Vellus or lanugo hair is _________ and appears nearly everywhere on the body

Short and fine

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26. Hair growth is not increased by any of the following except________.

The time of the year

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27. At any given time, about _______ percent of scalp hair is growing.

90

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28. Hair texture is measured by the diameter of the hair strand and is classified as coarse ________ or fine.

Medium

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29. Hair with a ______ texture has the largest diameter

Coarse

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30. Fine hair _________

Is most likely to be damaged by chemical services