Trace Evidence - Hair

Question 1

Hairs are a structure only common to _______

Answer 1

mammals

Question 2

Hairs are _______ _______ that originate from ________

Answer 2

Fibrous
Growths
Epidermis

Question 3

Hair is made of ______

Answer 3

Keratin

Question 4

Follicle is _____ within which _____ grows

Answer 4

structure

hair

Question 5

When is hair dead?

Answer 5

When it reaches our skin

Question 6

What 3 things do follicles contain? and what do they help to do?

Answer 6

blood vessels
nerves
sebaceous glands

Produce oils which help to keep hairs soft and pliable

Question 7

What are the muscles of the hair called?

Answer 7

Pili arrector that raise hairs causing goosebumps

Question 8

What 3 properties does hair have on a macroscopic scale?

Answer 8

Root - Portion that formerly was in follicle
Shaft - Main portion of the hair
Tip - Distal most portion of the hair

Question 9

It is _____ to distinguish between a human and a non human hair

Answer 9

Easy

Question 10

Animal hairs have _____ ______ _______ that distinguish them from human hairs

Answer 10

several macroscopic characteristics