Ch.11 Properties Of The Hair And Scalp

The scientific study of hair and its diseases and care is called:

The two parts of a mature strand of human hair are:

The portion of the hair that projects above the skin is the:

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

Hair follicles are distributed all over the body, with the exception of the:

The thickened, club-shaped structure that forms the lower part of the hair root is the:

The small, cone-shaped area at the base of the hair follicle that fits into the hair bulb is the:

The _____ glands secrete sebum.

Which layer of hair consists of transparent, scale-like cells?

Which layer of hair provides a barrier that protects the inner structure of hair?

The cortex of the hair has a fibrous protein core formed by _____ cells.

Most of the total weight of hair comes from which layer of the hair?

Unique protein structures within the cortex are responsible for the color and _____ of hair.

The medulla is composed of _____ cells.

Generally, only which type of hair contains a medulla?

The maturing process of hair is:

Hair is approximately 90 percent:

The five major elements in skin and hair are referred to as the _____ elements.

Proteins are made of long chains of:

Amino acids are joined by _____ bonds.

Peptide bonds are also known as:

A helix is:

Polypeptide chains are cross-linked like the rungs on a ladder by _____ different types of side bonds.

Which of the following is NOT one of the three types of side bonds of the cortex? -salt bonds -hydrogen bonds -cortex bonds -disulfide bonds

Which type of side bond can be broken by water or heat?

Salt bonds can be broken by _____ solutions.

Disulfide bonds account for about _____ of the hair's overall strength.

Thio neutralizers are used to reform _____ bonds.

Hydroxide chemical hair relaxers break disulfide bonds and convert them to:

Pheomelanin provides hair colors ranging from:

The wave pattern of the hair refers to the ______ of the hair strand.

Extremely curly hair does NOT typically:

New hair is produced during the _____ phase, or growth phase, of hair growth.

The final phase in the hair cycle, lasting until the fully grown hair is shed, is the _____ phase.

The term used to describe abnormal hair loss is:

Which of the following conditions is an autoimmune disorder?

Which type of alopecia describes temporary hair loss at the end of a pregnancy?

How many hair growth treatments have been approved by the FDA for sale in the United States?

The technical term used to describe gray hair is:

Alternating bands of gray and pigmented hair throughout the length of the hair strand is called:

The condition that describes abnormal growth of hair is:

Trichorrhexis nodosa is the technical term for:

The technical term for brittle hair is:

The condition characterized by the excessive production and accumulation of skin cells is:

Research has determined that dandruff is the result of a fungus called:

When a parasite called a mite burrows under the skin, the result is:

An acute, localized bacterial infection of a hair follicle that produces constant pain, is called a boil or a:

Hair _____ is the thickness or diameter of the individual hair strand.

Hair that has the largest diameter and usually requires more processing time is:

The measurement of the individual hair strands on 1 square inch of the scalp is hair:

The average hair density is about how many hairs per square inch?

The ability of the hair to absorb moisture is called hair:

The ability of the hair to stretch and return to its original length without breaking is called hair:

Hair that forms a circular growing pattern, as on the crown of the head, is called a:

People with dry hair and scalp should:

​Oily hair and scalp can be caused by:

Vellus hair almost never has a:

​Which of the following statements is true?

A study suggests that bald men are perceived as:

Which condition is characterized by dry, sulfur-yellow, cuplike crusts on the scalp?​