exam

the scientific study of hair, its diseases and care is called

the two parts of a mature hair strand are the hair shaft and

the portion of the hair that projects above the skin is the

the follicle bulb papilla arrector pili muscle and sebaceous glands are main structures of the

the tubelike depression or pocket in the skin or scalp that contains the hair root is the

hair follicles are not found on teh palms of the hands or the

the follicle extends downward from the epidermis where it surrounds the

the lowest area or part of the hair strand is the

a small cone shaped area at the base of the hair follicle that fits into the hair bulb is the

a tiny involuntary muscle fiber inserted in the base of the hair

the oil glands of the skin connected to the hair follicles are

an oily substance secreted from the sebaceous glands is

the overlapping layer of hair with transparent scalelike cells is

the three main layers of the hair shaft are the cuticle medulla and

swelling the hair raises the cuticle layer and allows for

for chemicals to penetrate a healthy cuticle hair layer, they must

the fibrous protein core of the hair formed by enlongated cells containing melanin pigment, is the

the medulla is the innermost layer of the hair and is composed of

hair is composed of a protein that grows from cells originating within the

the process whereby living cells mature and begin their journey up the hair shaft is

the five main elements that make up the chemical composition of human hair are barbon, oxygen, hydrogen, and

the chemical bonds that hold together the amino acid molecules are

an end bond is also known as

when peptide bonds hold together a very long chain of amino acids it is called a

the three types of cross links that form the bonds between the polypeptide chains are hydrogen bonds salt bonds and

a weak type of physical side bond that is easily broken by water or heat is a

a salt bond is easily broken with the use of

bonds that must be chemically separated are

hydrogen chemical hair relaxers break disulfide bonds and during rinsing convert then to

the natural hair pigment foudn in the cortex layer of the hair is

the 2 different types of melanin are eumelanin and

natural wave patters are the result of

asians tend to have

extremely curly hair grows

to help minimize tangles in extremely curly hair when washing you shoudl use

extremely curly hair may often break or knot easily due to

four important factors to consider in hair analysis are texture porosity...

the thickness or diameter of the individual hair strand is the

hair texture is classifiedas

the measurment of individual hair strands on one square inch of the scalp is

the ability of the hair to absorb water or oil is

chemical services performed on hair with low porosity require

hair with high porosity is often the result of

the ability of the hair to stretch and return without breaking is

wet hair with normal elasticitywill stretch up to

when shaping and styling hair considerthe hairs

dry hair and scalp can be caused by

oily scalp and hair can be treated by properly shampooing with

hair that is no pigmented and almost never has a medulla is

long, soft hair found on the scalp legs arms and bodies of males and females is

the phasesof hair growth are anagen catagen and

the growth phase where new hair is produced is

the average growth of healthy scalp hair is

the final resting phase in the hair growth cycle is

in general the cross sections of curly hair can be

the term used to identify abnormal hair loss is

the sudden falling out of hair in round patches or baldness in spots is called

2 products approved by the fda to stimulate hair growth and allowed for sale in the us are

the technical term used to describe gray hair is

a variety of canities characterized by alternating bands of gray and pigmented hair is

a condition of abnormal hair growth on areas of the body is

trichorrhexis nodosa is characterized by brittleness of the hair and formation of

the technical term used to describe beaded hair is

the medical term for dandruff is

the medical term used to describe a fungal organism charactorized by itching scales and painful circular lesions is

the type of fungal infection characterized by red papules at the opening of the hair follicle is

a highly contagious skin disease caused by a mite parasite is

an acute localized bacterial infection of the hair follicle that produces constant pain is

an inflammation of the subcutaneous tissue caused by staphylococci is

the spread of diseases can be prevented by practicing approved