Hair And Nail Properties

Question 1

Cosmetologist should have a thorough understanding of properties of the hair and scalp because…

Answer 1

Understanding how the hair structure is formed and how hairstyling and chemical services alter hair, will lead to safer smarter services

Question 2

What is the study of hair called including its diseases and care?

Answer 2

Trichology

Question 3

why should cosmetologist have a thorough understanding of the properties of hair and scalp.

Answer 3

Because I identifying the differences between common and uncommon hair loss helps them better recommend hair loss treatment to clients

Question 4

What is the heart of hair that is located below the surface of the epidermis?

Answer 4

The hair root

Question 5

What is the tube like structure in the skin or scalp that surrounds the hair and includes the hair in the skin?

Answer 5

Hair follicle

Question 6

Which of the following statements is true of the hair bulb?

Answer 6

It contains living cells that form the hair strand

Question 7

What is a cone shaped elevation at the base of the hair bulb and contains blood vessels that supply nutrients that allow the hair to grow?

Answer 7

Dermal papilla

Question 8

What is the involuntary muscle in the dermis that attaches to the hair follicle?

Answer 8

Arrector Pili muscle

Question 9

What are attached to the hair follicle and produce an oily substance that lubricates the hair and skin?

Answer 9

Sebaceous glands

Question 10

What is the hairs outermost layer?

Answer 10

The hair cuticle

Question 11

What is the function of the hair cuticle?

Answer 11

It protects the cortex

Question 12

What is the fibrous protein layer of the hair?

Answer 12

Cortex

Question 13

What is the function of the cortex?

Answer 13

It is responsible for the hair, strength, elasticity, and color

Question 14

What is the innermost layer found in course hair and beard hair and is also known as the hair pith or core?

Answer 14

Medulla

Question 15

What type of hair always contains a medulla

Answer 15

Beard hair

Question 16

What is keratinization?

Answer 16

It’s the process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus ,and die

Question 17

What element makes up 51% of of typical hair strands

Answer 17

Carbon

Question 18

Which bonds that cross-link poly peptide chains and a responsible for the extreme strength and the elasticity of human hair

Answer 18

Side bonds

Question 19

What is a similarity between hydrogen bonds and salt bonds?

Answer 19

Both result from attracting opposite charges

Question 20

Which bond is a strong chemical side bond that joins the sulfur atoms of two neighboring cystein amino acids with the polypeptide chain

Answer 20

Disulfide bond

Question 21

What is the tiny grains of pigment in the cortex that gives natural color to the hair?

Answer 21

Melanin

Question 22

What refers to the amount of movement or shape of the hair strand?

Answer 22

Wave pattern

Question 23

What describes the diameter of an individual hair strand?

Answer 23

Hair texture

Question 24

What best describes hair porosity

Answer 24

It refers to the hairs ability to absorb moisture

Question 25

What kind of hair has a very healthy cuticle where the scales lie flat

Answer 25

Low porosity

Question 26

What kind of hair has a raised cuticle and it typically damaged, dry, fragile, and brittle

Answer 26

High porosity

Question 27

What is the hairs ability to stretch and return to its original length without breaking referred to as

Answer 27

Hair elasticity

Question 28

What describes hair flowing in the same direction as a result of follicle sloping in the same direction

Answer 28

Hair stream

Question 29

What is true of medium hair?

Answer 29

It is the standard to which other hair textures are compared

Question 30

What is a difference between fine hair and course hair?

Answer 30

Fine hair has the smallest diameter whereas course hair has the largest diameter

Question 31

What measures the number of individual hair strands on one square inch of scalp

Answer 31

Hair density

Question 32

Which hair color has the highest density?

Answer 32

Blonde

Question 33

What is true of cowlicks

Answer 33

They are usually more noticeable at the crown

Question 34

People with dry hair and scalp should

Answer 34

Avoid products with high alcohol content

Question 35

People with oily hair and scalp should

Answer 35

Thoroughly rinse hair after shampooing

Question 36

What is the short fine hair that covers a fetus and generally sheds within a few weeks of birth called

Answer 36

Lanugo hair

Question 37

What is short fine unpigmented body hair often referred to as peach fuzz called

Answer 37

Vellus hair

Question 38

What is long pigmented hair on the scalp and body called?

Answer 38

Terminal hair

Question 39

What is the growth phase?

Answer 39

Anagen phase

Question 40

What occurs during the anagen phase of the hair growth cycle?

Answer 40

New hair is produced

Question 41

What cycle is a brief transitionary period between the hair, follicles growth and resting phases

Answer 41

Catagen phase

Question 42

What occurs during the catagen phase of the hair growth cycle?

Answer 42

The follicle canal shrinks and detaches from the dermal papilla

Question 43

Which phase is the resting phase?

Answer 43

Telogen phase

Question 44

What is true of the telogen phase of the hair growth cycle?

Answer 44

It is the final hair cycle phase

Question 45

What is a myth about hair?

Answer 45

Shaving and cutting hair makes it grow back darker and Corser