Chapter 7 Flashcards
Which of the following is not one of the main purposes of hair?
Support
The technical term for the study of hair is called
Trichology
When looking through a microscope which portion of the hair would display living cells?
Hair bulb
Hair grows from a tube like pocket called a root sheath or a
follicle
The diameters of a hair fiber will be the same as
the inside diameter of the hair follicle
What is the natural flow of hair determined by
The angle of the follicle
The two primary parts of hair the
hair roots
What is the portion of hair that extends above the skin surfaces
hair fiber
Which of the following resembles the shape of a golf club and covers the follicle at the lower portion of the hair roots?
Bulb
Locate at the bottom of the follicle and supplying nourishment to the germinal matrix is the
Papilla
The three major layers of the hair are the medulla, cortex and?
Cuticle
The pigment that given hair its color is found primarily in the
cortex
The layer of hair consisting of unique protein structure that give the hair most of its pigment and strength is called
Cortex
The outer covering of the hair shaft made up of overlapping layers of transparent scales is called
Cuticle
Hair that has been pulled out from the roots can grow back under which of the following circumstances
The papilla has not been destroyed
Oil gland are attached to the side of the
root sheath or follicle
The central core of the hair shaft sometimes missing in fine or very fine hair is called the
Medulla
Which of the following item helps protect the hair and skin from becoming too dry
Sebum
What is formed when sebum produced by the oil glands mixes with the body’s perspiration?
Acid mantle
The muscle that cause the hair to stand on end when a person is scared or cold is known as the
Arrector pilli
Hair is made up primarily of
Protein
Which of the following is known as the active growing state of hair
Anagen stage
The active growing state of her last form
2 to 6 years ???
Catagen a brief transitional phase lasts for what amounts of time?
Only a few week
The hair growth stage when all cell division stop is the
Catagen stage
The resting stage of hair growth when the hair bulb has no attached root sheath is referred to as the
telogen stage
Human hair on the average grow about
1/2 (1.25cm) per month
The lips soles of the feet palms of the hands and eyelid do not have
hair
Cilia is the technical term for
eyelash hair
The cross section or diameter of the hair shaft is much larger in coarse hair then which of the following?
Fine hair
Which of the following is the hardest resistant layers of protein that protects the hair shaft
Cuticle
The large variety of hair color is influenced by the amount and distribution of
Eumelanin and pheomelain