Hair Basics
A hair shaft is generally considered what type of evidence?
What is class evidence?
What protein makes up the hair shaft?
What is keratin?
What medulla pattern is most common in humans?
What is NO medulla?
Fibers are considered what type of evidence?
What is class evidence?
The smallest indivisible unit of a textile is called a _________.
What is a fiber?
What is the main function of hair?
What is regulate body temperature?
Name the three layers of the hair shaft. (Think of the analogy of the pencil)
What are the cuticle, cortex, and medulla?
What does the medullary index help determine?
What is whether hair is human or animal?
What is the first tool used in analyzing a fiber?
What are your EYES?
Lengthwise threads (up and down) in a textile are called __________.
What are WARP threads?
What type of transfer occurs when dog hair sticks to your pants and then transfers to a bus seat?
What is secondary transfer?
Name the three stages of the hair life cycle.
What are anagen, catagen, and telogen?
What microscope allows side-by-side comparison of hairs?
What is a comparison microscope?
What tool is used after visually examining a fiber with your eyes?
What is a microscope?
Crosswise threads (side to side) in a textile are called __________.
What are WEFT threads?
Name two ways to collect individual hair strands.
What are forceps/tweezers OR tape lifting?
Which layer is the outer most layer of the hair?
What is the cuticle?
What microscope can magnify samples 50,000 times or more?
What is an electron microscope?
What fiber property is being analyzed using chromatography?
What is dye composition?
What weave pattern is used to make denim?
What is twill weave?
Name the six types of hair found on the human body.
What are head, eyebrow/eyelash, beard/mustache, underarm, body, and pubic hair?
How much does human hair grow in ONE month on average?
What is approximately 1.3 cm per month?
What does PCR stand for?
What is Polymerase Chain Reaction?
What does a large quantity of matching fibers suggest?
What is prolonged, violent, or repeated contact?
Fibers are twisted together to create this textile component before fabric is woven.
What is yarn?