History of Hair Analysis
When did scientists recognize the importance of Hair Analysis?
a. Early 1800's
b. mid 1800's
c. late 1800's
c. late 1800's
What is the purpose of hair?
a. to style it
b. to regulate body temperature
b. to regulate body temperature
What 2 parts does the hair consist of?
a. follicle and cortex
b. cortex and shaft
c. shaft and follicle
c. shaft follicle
What is the first stage of hair life cycle?
a. telogen
b. catagen
c. anagen
Anagen
What happens to your hair when its bleached?
it makes it brittle
What was the name of the study of Hair written in 1910?
a. All about hair
b. The hair of man and animals
c. Hair analysis
b. the hair of man and animals
About how many hair follicles are on our body?
a. 4 million
b. 5 million
c. 6 million
5 million
What is the shape of a hair follicle?
a club
What happens in the first stage of the hair life cycle?
a. the period of active growth
b. hair stops growing and follicles recede
c. hair follicles are resting and hairs are easily lost
a. the period of active growth
When hair is dyed, where is the color shown?
a. cuticle and cortex
b. cortex and shaft
c. shaft and cuticle
The cuticle and cortex
a. 1934
b. 1943
c. 1941
What percent of those 5 million hair follicles are on our head?
a. 2%
b. 50%
c. 75%
2%
Hair follicles contain DNA. True or False?
a. True
b. False
a. True
What happens in the second stage of the hair life cycle?
a. the period of active growth
b. hair stops growing and follicles recede
c. hair follicles are resting and hairs are easily lost
b. hair stops growing and follicles recede
How is Hair preserved in a crime scene?
Placed in a paper packet and then in an envelope
What is Hair Analysis?
trace evidence
What happens to your hair if the temperature is cold outside?
The muscles pull your hair up creating a pocket of air for insulation.
What is a hair shaft?
The visible part of the hair
What happens in the third stage of the hair life cycle?
a. the period of active growth
b. hair follicles are resting and hairs are easily lost
c. hair stops growing and follicles recede
b. hair follicles are resting and hairs are easily lost
What type of evidence is Hair Analysis?
a. Individual
b. class
c. circumstantial
c. circumstantial
What was the first purpose of hair analysis?
To solve murder
What happens to your hair if the temperature is hot?
The muscles relax allowing your hair to flatten, and release the pocket of air/insulation.
What is a hair follicle?
The follicle allows you hair to grow
How many stages of the hair life cycle are there?
4
Why is hair not the best physical evidence?
It isn't possible to show with certainty that two hairs came from the same person or animal.