The two primary parts of hair are the hair fiber and the:
Hair Root
What is the portion of hair that extends above the skin's surface?
Hair Fiber
The pigment that gives hair its color is found primarily in the:
Cortex
Oil glands are attached to the side of the:
Root Sheath or Follicle
The layer of hair consisting of unique protein structures that give the hair most of its pigment and strength, elasticity is called the:
Cortex
The active growing stage of hair lasts from:
2 to 6 years
The muscle that causes the hair to stand on end when a person is scared or cold is known as the:
Arrector Pili
Hair is made up primarily of:
Protein
Which of the following is known as the active growing stage of hair?
Anagen Stage
The hair growth stage when all cell division stops is the:
Telegon Stage
Human Hair, on the average, grows about:
1/2 1.25cm per month
Cilia is the technical term for:
Eyelash Hair
What is the lack of pigmentation in the hair and skin called?
Albinism
Gray hair is caused by an:
Reduced color pigment, melanin, in the cortex layer of the hair
The degree of coarseness or fineness of the hair fiber is referred to as:
Texture
The number of active hair follicles per square inch on the scalp refers to:
Density
The large variety of hair color is influenced by the amount and distribution of:
Eumelanin and Pheomelanin
Wet hair is able to be stretched to what percent of its length?
40% to 50%
Small cracks starting in the cuticle and splitting the hair entirely are known as brittle hair, fragilitis crinium or:
Trichoptilosis
The ability of the hair to absorb moisture, liquids and chemicals is known as:
Porosity
A condition in which beads or nodes form on the hair shaft is called:
Monilethrix
What is the average amount of daily hair loss:
40 to 100 strands
Long, thick, pigmented hair such as scalp and eyebrow hair is referred to as:
Terminal