Hair, Fiber, & Botanicals Evidence

What cuticle type is this?

• Spinal

• Continous

• Coronal

• Imbricate

Pigment is found in which part of the hair shaft?

• Cuticle

• Cortex

• Medulla

• Follicle

Match the medulla pattern to the correct label

• Lattice

• 
• Fragmented

• 
• Continuous

• 
• Absent

• 

Which stage of hair growth is characterized by hair growth?

• Anagen

• Catagen

• Telogen

Which characteristic can be used to differentiate synthetic fibers from natural?

• Synthetic = uniform diameter

• Natural = uniform diameter

• Synthetic = inconsistent shapes

• Natural = consistent shapes

Pick the right options in the dropdown below.

Investigators recover small fragments of plant material on a suspect's jacket. To identify the plant species, they analyze the ​ (a)   , which is unique to certain plants. They also compare the ​ (b)    to reference samples from the scene to confirm a possible match. 

• seed morphology
• leaf veins
• hair follicle
• fiber pattern

Fibers are classified as either:

• natural fibers or synthetic fibers.
• polymers or synthetic fibers.
• acrylic fibers or plant fibers.
• olefins or synthetic fibers

Tags

NGSS.MS-PS1-3

The medullary index of human hair is ________ the medullary index for most other animals.

• less than
• greater than

• the same as

What information does the medullary index tell an investigator?

• How old the hair is

• How long the hair is

• If the hair belongs to an animal or human

• If the hair has been dyed

Which form of evidence can be associated with a group?

• Class

• Inidiviudal

• Testimonial

• Transient

Tags

NGSS.HS-LS2-8