Chapter 07 Hair and Scalp Properties Flashcards
Cosmetologists should have a thorough understanding of the properties of the hair and scalp because __________.
a. they are physicians specialized in a medical branch of science that involves the study of the hair and its structure
b. understanding how the hair structure is formed, and how hairstyling and chemical services alter hair, will lead to safer, smarter services
c. they are responsible for informing clients about the parts of the hair that will be affected by the hair services availed by them
d. they are licensed to diagnose, treat, prescribe, or work on unhealthy hair and scalp
b. understanding how the hair structure is formed, and how hairstyling and chemical services alter hair, will lead to safer, smarter services
Which of the following is a reason why cosmetologists should have a thorough understanding of the properties of the hair and scalp?
a. because they are licensed to treat unhealthy hair and scalp and they should be able to do it efficiently
b. because they are required to perform procedures that are listed under a medical license or podiatry license
c. because identifying the differences between common and uncommon hair loss helps them better recommend hair loss treatments to clients
d. because learning about the properties of the hair and scalp is essential in order to diagnose a specific disease or disorder
c. because identifying the differences between common and uncommon hair loss helps them better recommend hair loss treatments to clients
Which of the following refers to the study of the hair, including its diseases and care?
a. hematology
b. rheumatology
c. trichology
d. podiatry
c. trichology
Identify the part of the hair that is located below the surface of the epidermis.
a. the hair root
b. the cortex
c. the hair cuticle
d. the hair shaft
a. the hair root
The __________ is a tube-like structure in the skin or scalp that surrounds the hair root and anchors the hair in the skin.
a. hair shaft
b. hair follicle
c. hair cuticle
d. dermal papilla
b. hair follicle
Which of the following statements is true of the hair bulb?
a. It is the living portion of the hair found above the epidermis.
b. It contains living cells that form the hair strand.
c. It produces sebum that lubricates the hair and skin.
d. It is the nonliving part of the hair attached to the hair shaft.
b. It contains living cells that form the hair strand.
The __________ 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.
a. hair follicle
b. dermal papilla
c. hair shaft
d. medulla
b. dermal papilla
The __________ is an involuntary muscle in the dermis that attaches to the hair follicle.
a. adductor longus muscle
b. deltoid muscle
c. arrector pili muscle
d. soleus muscle
c. arrector pili muscle
__________ are attached to the hair follicle and produce an oily substance that lubricates the hair and skin.
a. Sebaceous glands
b. Dermal papillae
c. Sweat glands
d. Hair cuticles
a. Sebaceous glands
Which of the following is the hair’s outermost layer?
a. the hair follicle
b. the medulla
c. the hair cuticle
d. the cortex
c. the hair cuticle
Identify a true statement about the hair cuticle.
a. It protects the cortex.
b. It is the fibrous protein layer of the hair.
c. It contributes to about 90 percent of the hair’s weight.
d. It is part of the hair root.
a. It protects the cortex.
The __________ is the fibrous protein layer of the hair.
a. hair follicle
b. hair cuticle
c. medulla
d. cortex
d. cortex
Which of the following is a function of the cortex?
a. It contributes to 50 percent of the hair’s weight.
b. It is responsible for the hair’s strength, elasticity, and color.
c. It contains living cells that form the hair strand.
d. It produces sebum that lubricates the hair and skin.
b. It is responsible for the hair’s strength, elasticity, and color.
The __________ is the innermost layer found in coarse hair and beard hair and is also known as the hair’s pith or core.
a. hair bulb
b. hair cuticle
c. medulla
d. cortex
c. medulla
Which of the following types of hair always contains a medulla?
a. smooth hair
b. fine hair
c. beard hair
d. straight hair
c. beard hair
Which of the following statements best describes keratinization?
a. It is the process by which sebaceous glands enhance the production of keratin by melanocytes.
b. It is the process by which the amount of keratin in the skin helps determine skin color.
c. It is the process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus, and die.
d. It is the process by which sebum, lipids, keratin, sweat, and water form a hydrolipidic film to protect the skin from drying out.
c. It is the process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus, and die.
In the context of the COHNS elements that make up human hair, __________ makes up 51 percent of a typical hair strand.
a. carbon
b. oxygen
c. sulfur
d. hydrogen
a. carbon
__________ are bonds that cross-link polypeptide chains and are responsible for the extreme strength and elasticity of human hair.
a. Carbon bonds
b. Side bonds
c. End bonds
d. Peptide bonds
a. Carbon bonds