Hair Theory

Front

The muscle that causes the hair to stand on end when a person is scared or cold is known as the:

Back

arrector pili

Front

Which of the following terms is known as the active growing stage of hair? resting stage, anagen stage, catagen stage, transitional stage

Back

anagen stage

Front

Catagen, a brief transitional stage, lasts for what amount of time?

Back

only a few weeks

Front

The resting stage of hair growth when the hair bulb has no attached root sheath is referred to as the:

Back

telogen stage

Front

The lips, soles of the feet, palms of the hands and eyelids do not have:

Back

hair

Front

Eumelanin is the type of melanin that produces:

Back

brown/black hair color

Front

What is the total lack of pigmentation in the hair and skin called?

Back

albinism

Front

Gray hair is caused by a(n):

Back

reduced color pigment in the cortex layer of the hair