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63 Cards in this Set
- Front
- Back
What are the three kinds of fingerprint types
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loop, whorl, arch
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What are the subtypes of the fingerprints?
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plain arch, tented arch... radial loop, ulnar loop....plain whorl, central pocket loop whorl, double loop whorl, accidental whorl
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If hair appears oval in cross section what race is it?
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European
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If hair appears circular in cross section what race is it?
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Asian
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If hair appears flattened in cross section what race is it?
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African American
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Which is wider: human medulla or animal medulla?
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animal medulla
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When you get older, what happens to your melanin concentration?
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It fades
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When did the crime occur?
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November 4, 1842
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Where did the crime occur?
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On the Smith's manor
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Who were the victims?
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Rebecca and Alexander Smith
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Who were the suspects?
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Anton Geisler, Henry Bawer, Mary Ann Abbot, and Francis Curran.
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Blood Splatter Interpretation
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the interpretation of size, shape, orientation, and distribution of blood pooled or splattered on various surface of a crime scene
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Criminology
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the study of criminal activity and how it is dealth with by law
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Evidence
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anything that has been used, left, removed, altered, or contaminated during the commission of the crime or other event under investigation
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Fingerprint
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the unique patterns created by skin ridges found on the palm sides of the fingers and thumbs
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Forensic science
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the application of science to technical questions relating to events that may lead to civil litigation or criminal prosecution
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What is the scientific name for the red blood cells?
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erythrocytes
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What are the jobs of leukocytes?
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They prevent disease
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What are the jobs of platelets?
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They help clotting
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Hemolysis
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The distruction of red blood cells
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Latent Fingerprint:
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a full partial fingerprint made by deposits of oils and/or perspiration, not usually visible to the human eye. Various technologies, including lasers, can be used to visualize latent prints so that they can be recorded (usually by photography) for comparison with previously recorded fingerprints.
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Microscopic Hair Analysis
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investigation procedure of examining hair shafts for identifiable characteristics.
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Physical Evidence
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any object, as distinguished from witness statements, that can help explain an event under investigation. For example, physical evidence can establish that a crime has been committed, and sometimes it can provide a link between a crime and its victim or between a crime and its perpetrator.
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Ridge Characteristics
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ridge endings, bifurcations, enclosures, and other ridge details, which, if present in both of two fingerprints being compared, must match in the two fingerprints for their common origin to be established.
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Serology
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the science dealing with properties and actions of serums in blood: also known as “blood analysis.”
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Trace Evidence
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material deposited at a crime or accident scene that can only be detected through a deliberate-processing procedure. An individual entering any environment will deposit traces of his or her presence, and this material can be used as evidence. Common types of trace evidence are hairs and clothing fibers.
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Root
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living part of hair embedded in the skin
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Shaft
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the visible part of the hair that lies above the scalp
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Follicle
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living connective tissue that hair originates and grows from
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Keratin
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one of the things the hair shaft is composed of
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Allele
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a version of a gene
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Agglutinin (anti-body):
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proteins found in the blood plasma that make sure only your blood type exists in your body
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Agglutinogens (antigen)
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proteins found on blood cells that tell what your blood type is
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Rh (rhesus factor):
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type of antigen on a blood cell that determines if your blood type is Rh+ or Rh-
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Erythrocytes (red blood cells):
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most common blood cell, red because they contain oxygen, contains a protein called hemoglobin (oxygen attaches to these when blood passes through the lungs)
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Leukocytes (white blood cells):
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keep you from getting sick, bigger than red blood cells but there aren’t as many,
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Platelets
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they help blood clot, and make sure you don’t bleed out
1 drop of blood contains: 50 million Red Blood Cells, 100,000 White Blood Cells, and 2.5 million Platelets |
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Bone Marrow
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inside if the bone where blood is made
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Agglutination
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binding of antibodies and corresponding antigens on red blood cells
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Hemolysis
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destruction of erythrocytes with the release of hemoglobin
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Latent Print
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fingerprint that is not visible to the naked eye. Must be seen through a deliberate-processing procedure.
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Visible Print
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fingerprint that can be seen by the naked eye
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Partial Print:
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only part of a fingerprint, not a full
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Ridge Characteristics
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special marks that make peoples fingerprints different, such as ridge endings, forks, and deltas
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Angle of Impact
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the angle at a blood droplet strikes a surface
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Clot
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a thick or coagulated mass of blood and possibly contaminants
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Cast-off Stains
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blood which has been thrown from a secondary object (weapon or hand), other than the impact site, onto a target
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Drop Patterns:
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characteristic patterns present when blood drips into standing, wet blood
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High-Velocity-Impact Spatter (HVIS):
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): the bloodstain pattern caused by a high-velocity impact/force to a blood source such as that produced by gunshot or high speed machinery
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Impact site
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Usually, the point on the body that received the blow or applied force that caused the blood to be shed
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Medium-Velocity-Impact Spatter (MVIS):
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): the bloodstain pattern caused by a medium-velocity impact/force to a blood source. A beating typically causes this type of spatter
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Origin
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the point from which the blood spatter came
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Parent drop
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the droplet from which satellite spatter originated
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Projected blood
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blood that strikes a target under pressure
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Satellite spatters
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small drops of blood that breaks off from the parent spatter when the parent droplet strikes a target surface
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Shadowing/Ghosting/Void
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a pattern that helps to place an object or body in the scene. Normally, the area in question lacks blood even though areas surrounding it show blood
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Spatter
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bloodstains created from the application of force or energy to the area where the blood originated
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Spines
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the pointed edges of a stain that radiate out to form the spatter
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Splash
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pattern created when a volume of blood in excess of 1 mL strikes a surface at a low to medium velocity
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Swipe
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the transfer of blood onto a target surface by a bloody object that is usually moved
Laterally |
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Transfer pattern
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the pattern created when a wet, bloody object comes into contact with a target surface, leaving a pattern with features of the object that are useful for identifying the object
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Target
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the surface on which blood ends up
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Wipe
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pattern created when a secondary target moves through and existing wet blood stain
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