Front

The deepest layer of hair (compared to the lead of a pencil) is the ___

Back

medulla

Front

The middle layer of a hair (compared to the wood of a pencil) is the __

Back

cortex

Front

The outside layer of a hair (compared to the ink on a pencil) is the ___

Back

cuticle

Front

Which layer of hair is the most helpful component when determining what type of animal the hair came from?

Back

cuticle

Front

The name for man-made fibers is:

Back

synthetic fibers

Front

To determine the medullary index, you would ______.

Back

measure the diameter of the medulla and divide it by the diameter of the hair

Front

What is the medullary index for a human hair?

Back

generally less than 1/3

Front

In which phase of hair growth is hair actively growing? Options: anagen, catagen, telogen, melanen

Back

anagen

Front

Which phase of hair growth is the intermediate period of hair growth and lasts about three weeks?

Back

catagen

Front

Which phase of hair growth is the final phase that results in hair loss and lasts about three months? Options: anagen, catagen, telogen, melanen

Back

telogen