hair

Question 1

trichology

Answer 1

the scientific study of hair, its diseases, and care

Question 2

what is going on under the epidermis

Answer 2

hair follicle,hair bulb,derma papilla,arrector pili,sabaceous glands

Question 3

hair bulb

Answer 3

forms the hair root

Question 4

phases of hair growth

Answer 4

anagen-growing phase
catagen-transition phase
telogen-resting phase

Question 5

trichoptilosis

Answer 5

the technical term for split ends

Question 6

how important are the cuticle and cortex

Answer 6

very.. it makes the structure of your hair

Question 7

cortex

Answer 7

• middle or inner layer
• protein
• makes up 90% of hair weight

Question 8

medulla

Answer 8

• inner layer
• round cells
• generally found in brunette hair
• in all male beard

Question 9

cuticle layer

Answer 9

-transparent
-overlapping scales
-attached to the cortex
-1 layer thick
(cuticle overlaps on hair shaft like shingles on a roof)

Question 10

amino acids are made up of 5 elements

Answer 10

carbons-51
oxygen-21
hydrogen-6
nitrogen-17
sulfur-5

Question 11

hair is made up of amino acids

Answer 11

• body can make 11 of 20 amino acids that make up your hair
• the remaining 9 nutrients must come from your diet
• sources are protein

Question 12

sebaceous glands (oil)

Answer 12

• if you produce too little you have dry hair

- if you produce too much you have oily hair

Question 13

sebaceous glands

Answer 13

create oil to protect the hair and scalp

Question 14

hair follicle

Answer 14

tube shape that houses each hair

Question 15

arrector pili

Answer 15

makes hair stand straight up ( causes goosebumps)

Question 16

papilla

Answer 16

fits into the root and feeds the hair