hair
The medulla is referred to?
what is the hair's pith or core.
the best way to describe how a disulfide bond in human hair is formed i
sulfur atoms on neighboring cysteine amino acids within polypeptide chains in the hair join.
the cause of dry hair and scalp
what is inactive sebaceous glands
the phase of the hair growth cycle where the follicle canal shrinks and detaches from the dermal papilla
what is the catagen phase
the tiny grains of pigment in the cortex that give natural color to the hair
what is melanin
The three living portions of hair
what is the hair bulb, hair follicle and the dermal papilla.
The outer most layer of the hair
what is the Cuticle
the whorl pattern can be explained as
what are strands of hair leaving the follicles at an angle different from the surrounding hairs
the long chain of amino acids linked by peptide bonds
what are polypeptide chains
the hair color that has the highest density
what is blonde
The portion of the hair root structure that supplies nutrients so that the hair can grow.
what is the dermal papilla
The side bond that is broken by water and heat
what is the hydrogen
the three types of side bonds that link chains of amino acids together
what are hydrogen, salt and disculfide
the measurement that describes the number of individual hair strands on 1 square inch of the scalp
what is diameter
the telogen phase of the hair growth cycle is considered to be
what is the resting phase.
what layer of the hair shaft that provides strength, elasticity, and color.
what is the cortex
The side bond that is broken when the pH of hair is changed
what is a salt bond
the measurement of the thickness or diameter of an individual hair strand
What is texture
the ability of hair to absorb moisture
what is porosity
the study of hair, including its diseases and care
what is trichology
what are the major chemical elements that make up human hair
The side bond that is broken only by a strong chemical, such as a hydroxide relaxer.
what is a disulfide bond.
the hair growth cycle in which the hair can shed
what is telogen
the type of hair that has the largest diameter and usually requires more processing time
what is coarse hair.
the cosmetologist should have a thorough understand of the properties of hair and scalp for the following three (3) reasons
what is : maintain health and integrity of the hair, safter, smarter services, and to recommend hair loss treatments.