Vocabulary
More Vocabulary
Structure of Hair
Facts About Hair
Types of Hair
Medulla Patterns
Diagram of a Hair Follicle
100
A type of fibrous protein that makes up the majority of the cortex of hair.
What is keratin?
100
Determines composition of elements in a sample.
What is neutron activation analysis?
100
Name of protein that composes the hair shaft.
What is keratin?
100
The importance of hair as trace evidence in criminal investigations was recognized during this time period.
What is the late 1800's?
100
Straight or wavy hair that can be blonde, red, brown, or black.
What is European hair?
100
List the 5 types of medulla patterns.
What are continuous, interrupted, fragmented, solid, and none?
100
Identify the structure being labeled in the top box on the left.
What is the hair shaft?
200
Allows the side-by-side analysis of samples, such as of hair or fibers.
What is comparison microscope?
200
Central core of a hair fiber.
What is medulla?
200
3 layers of the hair.
What are medulla, cortex, and cuticle?
200
Number of hair follicles humans are born with and only 2% are found on the head. This is the largest number of hair follicles a human will ever have because the density of hair decreases as a person ages.
What is 5 million?
200
Straight dark or black hair.
What is Asian hair?
200
This type of medulla pattern is broken at regular intervals. ___ ___ ___ ___
What is interrupted?
200
Identify the item being identified in the second box on the left.
What is a sebaceous gland?
300
The region of a hair located outside of the medulla containing granules of pigment.
What is the cortex?
300
Actively growing root or base of a hair containing DNA and living cells.
What is a hair follicle?
300
Innermost, can be hollow, missing, fragmented, segmented, continuous or doubled part of hair.
What is medulla?
300
Three stages that hair proceeds through as it develops.
What are the anagen stage, the catagen stage, and the telogen stage?
300
Kinky, curly, coiled, dark black hair.
What is African hair?
300
This type of medulla pattern has no pigmentation in the medulla.
What is none?
300
Identify the pink layer labeled in the 3rd box on the left.
What is the dermis?
400
The tough outer covering of a hair composed of overlapping scales.
What is the cuticle?
400
Connects an individual or thing to a certain group.
What is class evidence?
400
Largest part of hair shaft in humans; contains most of the pigment.
What is melanin?
400
Stage of hair lasting 1,000 days with active growth.
What is the anagen stage?
400
Name 3 regions of hair located above the shoulders.
What are head hair, eyebrows/eye lashes, and beard/moustache hair?
400
This type of medulla pattern is an unbroken line of color. ________________________________
What is continuous?
400
Identify what the bottom box on the left is pointing to.
What is a capillary?
500
This identifies a particular person or thing.
What is individual evidence?
500
Bits of pigment found in the cortex of a hair.
What is melanin granules?
500
Transparent outer layer made of scales.
What is the cuticle?
500
Stage of hair development when hair follicles are dormant and hair is easily lost.
What is the telogen stage?
500
This hair has a double medulla.
What is beard hair?
500
This type of medulla pattern is unevenly spaced.
_________ _ _ _ _ ___________ __ _ __________
What is fragmented?
500
Identify the top, dark brown layer of the diagram.
What is the skin surface?
600
Small amounts of physical or biological material found at a crime scene.
What is trace evidence?
600
With this type of evidence a follicle is present.
What is individual evidence?
600
Name the 2 main parts of a single hair.
What are the follicle and shaft?
600
Stage of hair development when hair grows, changes, and possibly turns grey.
What is the catagen stage?
600
This type of hair shows buckling.
What is pubic hair?
600
This type of medulla pattern fills the medulla and cortex.
What is solid?
600
Identify the top box on the right.
What is the epidermis?
700
When blood and tissue is attached to a hair follicle it is called this. It can be analyzed for blood type, DNA, and toxins.
What is a follicular tag?
700
In this type of evidence no follicle is present.
What is class evidence?
700
The end of a follicle has a network of these to supply nutrients to feed the hair and help it grow.
What are blood vessels?
700
A person's body can absorb these and incorporate it into the hair.
What are chemicals?
700
Hair that is very dense.
What is fur?
700
Identify the lowest layer in the diagram marked by the last box on the right.
What is the sub-cutaneous layer?
800
Type of hair that is blunt and may have frayed ends.
What are arm and leg hair?