Show:
history of hair analysis
the function of hair
the structure of human hair
the cycle of hair
ethnic or ancestral differences
100
late 1800s
when did scientist recognize the importance of hair analysis?
100
mammals.
only what have hair??
100
follicle and shaft.
what are the 2 parts of hair?
100
3.
how many stages does hair have?
100
oval or round of moderate diameter with minimal variation
What is european cross section?
200
the investigation of hairs found at the scene.
What did the case murder of 1847 in paris said to have involved?
200
to regulate body temp.
what is the main purpose of hair?
200
hair follicle .
What is club shaped structure in the skin?
200
80% to 90%.
how many percent of all human hair is in the antagen stage.
200
densely distributed.
What is asian pigment granules?
300
1934.
when was the first use of the comparison microscope for simultaneous side by side analysis of hairs?
300
decreases friction and protects the skin against against sunlight.
what does hair also do?
300
keratin.
What is the hair shaft composed of?
300
2%
the catigen stage acounts for _ percent of all hair growth?
300
generaly straight or wavy.
What is european appearence ?
400
microscopic examination and DNA analysis.
todays standard procedures of hair analysis include what?
400
fur.
What is the dense hair of some mammals referred to as?
400
a chain of amino acids that form a helix.
What is keratin made up of ?
400
telogen stage.
What is the final stage?
400
round with large diameter .
What is asain cross section?
500
Alfred taylor and Thomas stevenson.
who wrote the principles and practice of medical jurisprudence?
500
5.
When humans are born they have about _ million hair follicles?
500
a transparent outer layer of the hair shaft.
What is the cutical?
500
10% to 18%
how many percent of hair makes up the telogen stage
500
kinky curly or coiled.: shaft may be buckled .
What is african apearence