Biology Of Hair Growth Flashcards
The blood vessels that nourish the hair are located in the
A.) epidermis
B.) hair shaft
C.) hair bulb
D.) hair papilla
C.) hair bulb
Which is not part of the pilosebaceous unit?
A.) arrector pili
B.) hair
C.) dermal papilla
D.) sudoriferous gland
D.) sudoriferous gland
Two or more hairs sharing a follicle are known as
A.) dualism
B.) neighboring
C. ) spacing
D. ) pili multigemini
D. ) pili multigemini
Which phase is the active phase of growth of hair?
A.) telogen
B.) catagen
C.) anaphase
D.) anagen
D.) anagen
Full anagen or anagen-6 indicates
A.) lanugo hair
B.) dermal cord
C.) shallow vellus
D.) deepest follicle stage
D.) deepest follicle stage
The enlarged base of the hair root is known as the
A.) bulb & bulge
B.) cortex
C.) follicle
D.) papilla
A.) bulb & bulge
This is an involuntary muscle that makes hair stand up
A.) bicep
B.) arrector pili
C.) smooth muscle
D.) static muscle
B.) arrector pili
Mitotic cells in the hair begin their growing activity in the
A.) keratin
B.) matrix
C.) epithelial sac
D.) upper part of the bulb
B.) matrix
Prenatal hair is called
A.) anagen
B.) sexual
C.) deep terminal
D.) lanugo
D.) lanugo
At what stage of hair growth does the hair separate from the papilla?
A.) telogen
B.) catagen
C.) anagen
D.) anagen 6
B.) catagen
Trichology involves the study of the diseases of the
A.) hair
B.) skin
C.) nails
D.) bones
A.) hair
What sex is ambosexual hair found in?
A.) male only
B. ) female only
C.) male & female
D.) fetal
C.) male & female
During puberty, ambosexual hair is located where?
A.) groin & beard
B.) groin & chest
C.) groin & legs
D.) groin & axilla
D.) groin & axilla
Where does vellus hair begin its growth?
A.) dermal papilla
B.) inner root sheath
C.) lobe of the sebaceous gland
D.) sudoriferous glands
A.) dermal papilla
Name the layer of hair that is the significant part of hair that gives its strength. & elasticity
A.) cuticle
B.) cortex
C.) medulla
D. ) outer root sheath
B.) cortex
