Hair and Fiber Review

Front

The protein that makes up hair is called _____

Back

keratin

Front

The smallest unit of textile material that has a length many times greater than its diameter is..

Back

fibers

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 types of medullas are NOT commonly found in human hair? Options: continuous, absent, interrupted, fragmented

Back

continuous

Front

Hair is helpful in solving old crimes because…

Back

hair does not easily decompose

Front

We know hair is from a human if… The medullary index is 0.5 or greater, The medullary index is 0.33 or less, The cuticle is coronal, The medulla is fragmented

Back

The medullary index is 0.33 or less

Front

Fibers are classified as either: natural fibers or synthetic fibers.

Back

natural fibers or synthetic fibers.

Front

Which part(s) of a hair can be analyzed for DNA? Options: root, cuticle, medulla, cortex

Back

root