structure of hair
What are the two parts of a strand of human hair?
What is root and shaft
if a cosmetologist holds a strand of hair with one hand while sliding the other hands thumb and forefinger from the end of the strand to the clients scalp, what component of the hair is being analyzed?
what is porosity
What is a medulla?
The hairs pith or core
In which phase of the hair growth cycle does the follicle canal shrink and detatch from the dermal papilla?
What is catagen phase
What term refers to the scientific study of hair and its diseases and care?
What is trichology
Which portion of the hair root structure supplies nutrients so that the hair can grow?
What is dermal papilla
Which component of hair is defined as the thickness or diameter of an individual hair strand?
What is texture
What can cause dry hair and dry scalp?
What is inactive sebaceous glands
What is the phase of the hair growth cycle in shich the hair can shed?
What is telogen phase
The greek word trichos means what.
What is hair
Which layer of the hair shaft provides strength, elasticity, and color?
What is cortex
The measurement that describes the number of individual hair strands on 1 square inch of the scalp is hair what?
what is density
What isnt the main type of body hair?
What is anagen hair
What is the growth phase during which new hair is produced?
What is anagen
Hair is approximatelywhat percent of protein?
What is 90%
What are the major chemical elements that make up human hair?
carbon, oxygen, hydrogen, nitrogen, and sulfur
The ability of the hair to absorb moisture is hair what?
What is porosity
What is true about hair?
The hair growth rate is determines by genetics
What are the three growth cycles of human hair?
What is anagen, catagen, and telogen
What is a highly contagiuos skin disease caused by a parasite called a mite?
What is scabies
Which part of the living portion of the hair is defines as the structure in the skin or scalp that surrounds the hair root and anchors the hair in the skin?
The dermal papilla
What is the outer moxst layer of hair?
What is hair cuticle
The hair, skin, nails, and glands are part of the ...... system?
What is integumentary
What is the hair term that protects the hair from penetration and prevents damage to hair fibers?
What is hair cuticle
Which type of hair has the largest diameter and usually requires more processing?
What is coarse hair