Structure
List the 3 layers of the hair shaft;
Cortex, cuticle, medulla
Briefly describe the medulla;
canal like structure in the middle of the hair shaft
Describe the cross section of hair of someone within the European race
oval or round
This is the primary protein that makes up hair
Keratin
This phase of hair growth is the transition phase
Catagen
What is the function of the cuticle?
Tough outer layer of the hair shaft - contains scales
List the types of medulla;
Continuous, Interrupted/Absent, Fragmented, solid, none
Describe the cross section of hair of someone within the Asian race
round with large diameter
Hair is an example of this kind of evidence
Trace evidence or class evidence
This is the final stage of hair growth - hair readily falls out
Telogen
What is the function of the cortex?
Holds the pigment that determines hair color
The medulla of the hair from a cat has this shape
Pearl shape
flat with small diameter
This part of the hair contains the DNA
Follicular tissue or root
Mitochondrial DNA contains traits from what contributor
Maternal
This is the club shaped structure that is found within the skin
Follicle
This group of people have a continuous medullae
Mongoloid
These are the 3 phases of hair
anagen, catagen, and telogen
The rate of hair growth is _______?
1 cm/month
Name one way that hair can be distinguished from different parts of the body
Cross sectional shape
This feature of the hair helps to distinguish between hair samples of animals or humans
Medulla
This is the initial growth phase of hair
Anagen
This process tests for the presence and concentration of various elements
Neutron Activation Analysis