properties of hair and scalp text

in what direction do hair follicles go in a hair stream?

the same direction

trichos

greek word for hair

elasticity

ability to stretch and return to its origional length without breakage

the cuticle layer is

transparent

porosity

the ability to absorb moisture

how much percent of the hair is protien

60%

coarse requires what

more processing

what kind of diameter does coarse hair have

large

how much time does coarse hair take to process

longer amount

a peptide bond is reformed by what

drying or cooling

eumelanin causes what

makes your hair dark (black or brown)

is velus hair pigmented

no

name four parts of the integumentary system

nail

hair

skin

glands

what is the resting phase of the hair cycle

telogen

what are hairs wave pattern

curly, straight, wavy , coily

pigment in the cortex is called what

melanin

what is chemically altered and shaped by permanent waving

disulfide bonds

where is the arector pillide muscle

base of hair follicle

what does the arrector pilllide cause

goosebumps

how is a salt bond broken

change in pH

a cuticle layer does what

makes things shiny and smooth

a hydrogen bond is broken by what

water and heat

what is the cuticle layer attached to

the cortex

what are three types of side bonds

hydrogen

salt

disulfide

what does the cortex contain

melanin pigment

what type of cells is the medulla made of

round

what does the c in COHNS stand for

Carbon

what does the o in COHNS stand for

oxygen

what does the h in COHNS stand for

hydrogen

what does the n in COHNS stand for

nitrogen

what does the s in COHNS stand for

sulfur

what is the unit of structure that builds protein

amino acids

Keratinized protein

proteins that die and create waterproofing

polypeptide chain

amino acids linked together

sebum

oil

dermal papilla

inside the hair, contains blood vessels and nerves

hair follicle

holds the root of the hair

three growth cycles of human hair

anagen, catagen, telogen

five main structures of the hair root

follicle

bulb

dermal papilla

arrector pill muscle

sebaceous glands

texture

the natural wave of the strands of hair

density

numbers of hair in a square inch