Chp 7 Hair and Scalp Properties

Which of the following best describes a procedure a cosmetologist could use to determine how quickly hair will process during chemical servicing ?

• Feel a strand of hair to determine the hair's texture.

• Consider how much of the scalp is visible to determine how many hairs there are on each square inch of the scalp

• Examine the shape of a cross-section of a strand of hair to determine the wave pattern

• Determine the slope of the hair follicles to identify the hair growth pattern

Which component of hair is defined as the thickness or diameter of an individual hair strand ?

• porosity

• elasticity

• texture

• density

which layer of the hair shaft provides strength , elasticity , and color ?

• the hair cuticle

• the hair fiber

• the medulla

• the cortex

The measurement that describes the number of individual hair strands on 1 square inch of the scalp is hair _.

• porosity

• diameter

• elasticity

• density

What are the major chemical elements that make up human hair ?

• carbon , oxygen , hydrogen , nitrogen , and sulfur

• proteins , water lipids , and traces of minerals

• amino acids and polypeptide chains

• hydrogen bonds , side bonds ,and salt bonds

What are the two parts of a strand of human hair ?

• the root and the shaft

• the follicle and the bulb

• the dermal papilla and the arrector pili

• the cuticle and the cortex

What is the growth phase during which new hair is produced ?

• genesis

• telogen

• anagen

• catagen

Which part of the living portion of the hair is defined as the structure in the skin or scalp that surrounds the hair root and anchors the hair in the skin ?

• the dermal papilla

• the hair bulb

• the arrector pili muscle

• the hair follicle

which of the following is a reason cosmetologists should understand hair and scalp properties

• identifying the shape of hair follicles can help when recommending methods to make a client's hair grow faster

• identifying the cause of a dry or oily scalp helps to better recommend medication to the client to alleviate the condition

• identifying hair growth cycles and the differences between common and uncommon hair loss will help when recommending hair loss treatments to the client

• identifying the elasticity of hair helps to better determine treatments to soften coarse gray hairs to match the texture of the client's pigmented hair

All of the following are living portions of hair that are below the skin surfaces EXCEPT _.

• the hair bulb

• the arrector pili muscle

• the hair follicle

• the dermal papilla