Hair is composed of protein that grows from cells originating within the _____.

Vellus hair is also known as _____ hair.

The pigment that provides brown or black color to hair is _____.

Current research confirms that dandruff is the result of a fungus called _____.

The body naturally produces _____ of the 20 amino acids that make up hair.

A weak, physical, cross-link side bond between adjacent polypeptide chains that is broken by changes in pH is a _____ bond.

What term refers to the shape of the hair strand?

Temporary hair loss experienced at the end of a pregnancy is called _____.

What are the three growth cycles of human hair?

What substances are comprised of long, coiled, complex polypeptides made of amino acids?

A lengthwise section of hair shows that cuticle scales overlap and each individual cuticle scale is attached to the _____.

Hydroxide chemical relaxers break disulfide bonds and convert them to _____ bonds.

The pocket or tube-like depression in the scalp or skin that contains the hair root is the hair _____.

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

The three different types of side bonds that link chains of amino acids together are _____.

Dry hair and scalp should be treated with products that contain moisturizers and _____.

A physical side bond that is easily broken by water and heat is a _____ bond.

The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur, often referred to as _____.

A small, cone-shaped area located at the base of the hair follicle that fits into the hair bulb is the _____.

Which type of hair has the largest diameter and usually requires more processing?

What is the medical term used to describe dandruff?

What pigment in hair provides natural colors ranging from red and ginger to yellow and blond tones?

What is the technical term for gray hair?

The changes involved in oxidation haircoloring, wet setting, thermal styling, permanent waving, and chemical hair relaxing take place within the _____.

What part of the hair is located below the surface of the epidermis?

What is the technical term for brittle hair?

The substance secreted by the sebaceous glands is called _____.

What is the medical term for ringworm?

The complete loss of all body hair is known as _____.

Chemical services performed on hair with low porosity require a _____ solution.

Hair flowing in the same direction, as the result of follicles sloping in the same direction, is known as a _____.

Which layer of the hair shaft creates the shine and the smooth, silky feel of healthy hair?

Tinea is characterized by itching scales and sometimes painful circular lesions and is caused by _____.

The ability of hair to stretch and return to its original length without breaking is referred to as hair _____.

The hair shaft that emerges from the scalp is a nonliving fiber composed of _____.

What is the cross-section shape of curly hair?

The fibrous protein core formed by elongated cells that contains melanin pigment is the _____.

What is a severe type of dandruff characterized by an accumulation of greasy or waxy scalp scales mixed with sebum?

What severe form of dandruff is accompanied by redness and inflammation?

What structures contain the blood and nerve supply that provide the nutrients needed for hair growth?

The small, involuntary muscle fiber in the base of the hair follicle is the _____.

What is the oily substance secreted by the skin’s oil glands that lubricates the hair and skin?

What type of bond is broken by wetting the hair with water and is reformed when the hair dries?

The ability of the hair to absorb moisture is hair _____.

The Greek word trichos means _____.

All natural hair color is the result of pigment called _____.

What is a condition that is characterized by brittleness and the formation of nodular swellings along the hair shaft?

Trichoptilosis is the technical term for _____.

The condition of abnormal hair growth of terminal hair is referred to as _____.

What term refers to an infestation of the hair and scalp with head lice?

What type of hair is short, fine, unpigmented, and downy?

What is the outermost layer of hair?

What term refers to the scientific study of hair and its diseases and care?

Permanent waving and hair relaxers change the shape of hair by chemically altering the hair’s _____.

Hair is approximately _____ percent protein.

What is a scalp disorder characterized by dry, sulfur-yellow, cup-like crusts on the scalp?

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

What is a highly contagious skin disease caused by a parasite called a mite?

The units of structure that build protein and are joined together end to end like pop beads are _____.

The hair, skin, nails, and glands are part of the _____ system.

A long chain of amino acids linked by peptide bonds is called a _____ chain.

What term refers to an acute, localized bacterial infection of the hair follicle that produces constant pain?

The thickness or diameter of the individual hair strand is referred to as hair _____.

The sudden falling out of hair in round patches or baldness in spots is known as _____.

What is the resting phase or final phase of the hair cycle that lasts until the fully grown hair is shed?

Which term refers to a layer that protects the hair from penetration and prevents damage to hair fibers?

What is the technical term for beaded hair?