Parts of Hair
Hair Analysis and Investigation
Hair Analysis and Testing
Case Studies
Other
100
Another term to identify human hair having cuticle scales that are flattened and narrow.
What is imbricate?
100
True or False: DNA analyses can not be performed on hair follicle cells.
What is false?
100
Ingested or absorbed toxins such as arsenic and drugs, can be detected by what?
What are chemical analyses of hair?
100
He proclaimed himself emperor of France in 1804 after rising swiftly through the French army’s ranks. His death is surrounded by controversy. History books claim he died of stomach cancer. Scientific analysis of his hair by chemist Walter McCrone has revealed that low levels of arsenic were found in his system. Who is he?
Who is Napoleon Bonaparte?
100
What are the five different types of medulla patterns?
Continuous, Interrupted (intermittent), Fragmented or Segmented, Solid, and None.
200
The club shaped structure in the skin.
What is follicle?
200
What is it called when hair is forcibly removed from a victim, and the entire hair follicle may be present?
What is follicular tag?
200
At what rate does human hair grow monthly?
What is 1.3 cm/month?
200
In the Alma Tirtsche case of 1921, who was the alleged murderer and how did he allegedly handle Tirtsche’s body? (Don’t forget to include where body was disposed of!)
Who is Colin Ross? He was the murderer. Allegedly, he beat up Tirtsche, washed her body free of blood, wrapped her body in a blanket, and deposited of the body in what is known as Gun Alley in Melbourne, Australia.
200
How many types of hair do forensic scientists distinguish on the human body and what are those types?
Six; (1) head hair, (2) eyebrows and eyelashes, (3) beard and moustache hair, (4) underarm hair, (5) auxiliary or body hair, and (6) pubic hair.
300
The end of the follicle consisting of a network of blood vessels that supply nutrients to feed the hair and help it grow.
What is papilla?
300
How do forensic scientists examine hair with light?
What is they do so using light: phase contrast, fluorescence, comparing?
300
What does NAA stand for and what is its purpose?
What is it stands for neutron activation analysis and is a particularly useful technique that cab identify up to 14 different elements in a single two-centimeter-long strand of hair?
300
In the Eva Shoen case of 1990, how did the police learn of and later incriminate the murderer Frank Marquis?
The Police received a phone call from Marquis’ brother who believed Marquis was responsible for the murder. Later after questioning friends of Marquis, the police learned that Marquis had been in Telluride, the location of the crime, when Shoen was murdered and discovered that Marquis had thrown two bundles out of his car on his drive home to Arizona. Police later searched the road and retrieved a bundle of clothing, found a hair in one of the shirts that matched Shoen’s, and confronted Marquis with the evidence. Marquis confessed and was imprisoned for 24 years?
300
_________ hair is generally straight or wavy, with small and evenly distributed ________ _________. _________ hair is generally straight, with a thick cuticle and _____________ medulla. The _____ _____of ______ hair is flattened with moderate to small diameter and considerable variation.
European; pigment granules; Asian; continuous; cross section; African
400
What is the function of the sebaceous gland and what is it associated with?
What is it secretes oil that helps keep the hair conditioned. It is associated with the bulb.
400
How do investigators use a vacuum for investigation?
What is they use it for large surfaces, which then gets filtered into the canister and gets examined for hair and other trace particles?
400
In what two ways is hair viewed for forensic investigations and distinguish the difference between both.
What are macroscopically has length,color and curliness characteristics, and microscopic characteristics include pattern of the medulla,pigmentation of the cortex, and types of scales on the cuticle?
400
Who is the chemical researcher discussed at the end of the chapter, what project was he the chief scientist of, and how did he verify a cause of Beethoven’s death?
William J. Walsh. He headed the Beethoven Research Project in 2000. He verified a cause of Beethoven’s death, lead poisoning, using highly sensitive techniques – scanning electron energy dispersion spectrometry (SEM/EDS) and scanning ion microscope mass spectrometry (SIMS).
400
Describe the different effects of artificial bleaching, bleaching from the sun, and dyeing on the hair. Include in your response the general effects of bleaching on the hair.
What are Bleaching hair removes pigment granules, gives hair a yellowish color, makes hair brittle, and disturbs the scales on the cuticle. Artificial bleaching shows a sharp demarcation along the hair. Bleaching from the sun leaves a more gradual mark. Dyeing hair changes the color of the hair shaft, cuticle and cortex?
500
What are the three layers of the hair shaft? Describe each.
What is the cuticle is a transparent outer layer of the shaft that is made of scales that overlap one another and protect the inner layers of the hair. The cortex is the largest part of the hair shaft that contains most of the melanin that give the hair its color. The medulla is the center if the hair?
500
What does an investigator do when he collects a large number of hairs from a victim or crime scene?
What is he will compare the sample with hair taken from the six major body regions of the victim or suspect. An initial analysis is performed using a low-power compound microscope to determine whether the hair is human or animal?
500
Compare three races and how they vary: European,Asian, African.
What is European- generally straight or wavy with pigment granules that are small and evenly distributed. Asian- straight with pigment granules that arr densely distributed. African- kinky,curly,or coiled with pigment granules that are densely distributed,clumped, and may differ in size and shape?
500
Who is the 16-year old whose body was discovered in a gravel pit near her home in Edmundston, New Brunswick across the Canadian border from Maine, who was her murderer, and how was the murderer incriminated? (Include an identification and description of the relevance of the evidence)
Gaetane Bouchard. The murderer was her boyfriend John Vollman. The police tied the murder to Vollman because of his relation to Bouchard, as reported by witnesses, but incriminated him circumstantial evidence. Paint flakes from where the couple had been seen together were found in Vollman’s car. Lipstick that matched the color of Bouchard’s lipstick was found on candy in Vollman’s glove compartment. Several strands of hair found in Bouchard’s hand were tested by neutron activation analysis (NAA) and matched to Vollman’s hair because they contained a ratio of sulfur to phosphorus more similar to Vollman’s hair than to Bouchard’s.
500
What are the three ways that forensic scientists can distinguish human hair from animal hair? Describe each way.
Human hair can differ from animal hair by pattern of pigmentation, medullary index, and cuticle type. In humans, the pigmentation tends to be denser towards the cuticle, while in animals the pigmentation is denser towards the medulla. Animal pigments are found in solid masses (ovoid bodies), especially in dogs and cattle, and can change color abruptly in a banded pattern. Human hair is usually one color along the length. If the ratio of the medulla’s diameter to the hair’s diameter, or medullary index is 0.5 or greater the hair is an animal’s. If the medullary index is 0.33 or less, the hair is a human’s. Human hair has imbricate, or flattened and narrow, scales on the cuticle, while animals can have many different types, including coronal, or appearing like a stack of crowns and spinous, or resembling petals.
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