Cosmo Chp 8 Properties of the Hair and Scalp

The scientific study of the hair, its diseases, and its care is called:
dermatology
biology
trichology
hairlogy
The two main divisions of the hair are the hair root and the:
hair shaft
dermal papilla
bulb
follicle
The three main structures associated with the hair root are the follicle, the bulb, and the:
cuticle
medulla
hair stream
dermal papilla
The hair root is contained in a tube-like depression, or pocket, in the skin known as the:
arrector pili
hair bulb
follicle
sweat pore
The club-shaped structure that forms the lower part of the hair root is the:
hair shaft
dermal papilla
arrector pili
hair bulb
The blood and nerve supply that provides nutrients needed for hair growth are contained in the:
arrector pili
dermal papilla
sebaceous glands
hair shaft
The tiny involuntary muscle in the skin that contracts and causes "goose bumps" is the:
orbicularis oculi
dermal papilla
medulla
arrector pili
The oily substance called sebum is secreted by the:
sudoriferous glands
arrector pili
sebaceous glands
dermal papilla
The three layers of the hair shaft are the cuticle, cortex, and:
follicle
bulb
root
medulla
The layer of the hair shaft that protects it from penetration and damage is the:
cortex
follicle
cuticle
medulla
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