Properties of the Hair and Scalp Part 1

The main purpose of hair is to:

• Protect and adorn the scalp

• Keep the scalp dry

• Prevent dandruff from falling out

• Keep the scalp lubricated

The study of hair is called:

• ophthalmology
• podiatry
• trichology
• dermatology

The technical term for long hair is:

• vellus

• terminal

• lanugo

• alopecia

Hair is chiefly composed of a substance called:

• melanin
• elastin
• keratin
• collagen

The process where cells mature, move upward in their nucleus, and die is called:

• keratinization

• Fermentation
• Meiosis
• Mitosis

Match the following type of bonds:

• Disulfide

• Physical side bonds broken by water or heat

• Peptide

• Bonds that should never be broken

• Hydrogen

• Chemical side bonds broken during chemical services

• Salt

• Physical side bonds broken by changes in pH

The hair takes its shape, size, and direction from its:

• cuticle

• cortex

• Follicle

• bulb

The two principal parts of the hair are the:

• arrector pili and sebaceous gland

• papilla and cuticle

• root and shaft
• follicle and bulb

Match the following

• medulla

• The outer layer of the hair that contains the hardest protein

• cortex

• the innermost layer of the hair that may be missing in fine hair

• cuticle

• The layer of the hair that contains bonds, pigment and gives strength and elasticity

Label the structure of the hair

a

b

c

e

f

g

h

d

Follicle

Shaft

Epidermis

Papilla

Arrector pili

Sebaceous gland

Root

Bulb