Hair Analysis: forensic science

A hair without the -------- and its ------- --- cannot provide individual evidence

• Follicle

• Cortex

• Melanin Granules

• Nuclear DNA

what two people published a comprehensive study on hair?

• Thomas Stevenson , Dr. Sydney Smith

• Victor Balthazard , Marcelle Lambert

• Dr. Sydney Smith , Alfred Swaine Taylor

• Marcelle Lambert , Alfred Swaine Taylor

what are the functions of hair ?

• Regulates body temperature

• maintaining head dry

• make you look "swag"

• Protect against sunlight

human hair consists of a -------- and a -----

• Follicle

• Shaft

• Medulla

• Cortex

the hair shaft is made up of 3 layers

• Inner medulla

• Cortex

• All Of The Above

• Outer Cuticle

what s a fragmented or segmented medulla?

• one unbroken line

• pigmented lines broken at regular intervals

• pigmented line unevenly spaced

• none of the above

how long does the Anagen stage of hair development last ?

• 1000 days

• one year

• 5 months

• 7 days

how to tell of hair is or was bleached ?

• looks white

• one strand of hair is 2 different colors

• hair looks to change color in sunlight

• hair lacks pigment in cortex and cuticle

how to tell if hair is dyed ?

• hair is stained only in cortex

• hair is only stained in medulla

• cuticle and cortex are stained

• looks different than from other hairs

type of hair characteristic for people of African ethnicity ?

• straight ,densely distributed and round large diameter

• generally straight or wavy , small and evenly distributed round diameter

• curly or coiled densely distributed flatten diameter

• none of the above