Hair Flashcards
1
Q
Why is hair good for forensic examination?
A
Sturdy, lasts a long time and carries biological info
2
Q
What is hair made from?
A
Keratin
3
Q
When is hair alive?
A
Only when it’s in the scalp. Once it leaves it is dead.
4
Q
Does hair have muscles?
A
Yes that’s what makes the hair stand up when you are cold.
5
Q
What gives hair colour?
A
Pigment
6
Q
How many hairs do humans lose per day?
A
Roughly 100 scalp hairs
7
Q
What are the three types of animal hair?
A
Guard hairs, fur and vibrissa (whiskers)
8
Q
What are the categories of human hair?
A
Head, pubic, facial, chest, auxiliary, eyelash/brow and limb
9
Q
What are the two categories of hair?
A
Human and non-human
10
Q
What is the main difference between human and animal hair?
A
Human hairs have constant pigmentation whereas animals have bands of colours.
