Vocab 1
part of the hair located below the epidermis
hair root
portion of the hair projected above the epidermis
hair shaft
spiral shaped of coiled proteins
helix
innermost layer of the hair shaft
medulla
tiny grains that give hair its color
melanin
responsible for goose bumps
arrector pili muscle
abnormal hair loss
alopecia
tuft of hair that stands straight up
cowlick
grey hair
canities
inflammation of subcutaneous tissue caused by staphylococci
carbuncle
ability of the hair to strech
elasticity
ability of the hair to absorb moisture
porosity
middle layer of the hair
cortex
signals the end of the anagen phase
catagen phase
number of individual hair strands per sqaure inch
density
happens immune sytem signal white blood cells to stop growth during anagen phase
alopecia aretea
short term hair loss after giving birth
postpartum alopecia
total body hair loss
alopecia unversalis
miniaturization of terminal hair to vellus hair
angrogenic alopecia
COHNS
CARBON, OXYGEN,HYDROGEN,NITROGEN,SULFUR
3 phases of the growth cycle
anagen,catagen,telogen
5 structures of the hair
hair follicle, hair bulb, dermal papilla, arrector pili muscle, sebaceous glands
3 side bonds of the cortex
salt,hydrogen, disulfide
3 structures of the hair shaft
hair cutucle,cortex, medulla
responsible for dark pigmented hair
eumelanin