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63 Cards in this Set

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