Shared Flashcard Set

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Exam #3
Firearms
37
Criminal Justice
12/05/2011

Additional Criminal Justice Flashcards

 


 

Cards

Term
Developing Homicide vs. Suicide
Definition
More suicides than homicides; multiple gunshot wounds; distance & directionality between muzzle & target; autopsy exam can substantiate likelihood
Term
Considerations
Definition
Area of injury - may preclude possibility of self-infliction; distance from target to muzzle; weapons presence or absence - absence in lieu of serious nature of wound indicating total & immediate cessation of movement, indicative of homicide
Term
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Definition
Basic cartridge - bullet/projectile, powder, primer, cartridge case
Term
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Definition
Firearm primer breechface mark
Term
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Definition
Firearm headstamp - markings on the bottom of a cartridge case designed for a firearm; usually tells who manufactured the case, caliber & where ammunition originated
Term
Gunshot Wounds - Distant Range
Definition
1. No powder or soot; 2. Contact/abrasion margin present; 3. Abrasion margin is discolored circle around entrance wound - caused by pushing of skin by bullet on entrance; 4. Directionality - abrasion margin is symmetrical if bullet enters skin from straight-on trajectory
Term
Distant Range Considerations
Definition
Wider abrasion margin at 1 area of entrance wound, closest to direction in which bullet traveled if bullet enters skin at angle
Term
Gunshot Wounds - Intermediate Range
Definition
Hot powder grains accompany bullet to wound site & are driven into skin, leaving small red marks on skin - stippling/tattooing
Term
Gunshot Wounds - Short & Close Range
Definition
Bullet hole, stippling & soot present
Term
Gunshot Wounds - Contact Range
Definition
Bullet hole, muzzle burn mark & impression of firearm present; loose fit - near contact; cornea of soot may be present where weapon not placed directly against skin
Term
Contact Range Considerations
Definition
Contact mark - size of barrel; soot & tattooing may not be present on external visualization of wound; wound - pinkish color; searing of skin at wound site may be visible
Term
Stellate Pattern
Definition
Firearm pressed against skull, gasses rip/tear/split skin - follow less resistant path & leave pattern
Term
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Definition
Firearm wound - intermediate range stippling
Term
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Definition
Firearm wound - intermediate range stippling
Term
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Definition
Firearm wound - close contact range
Term
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Definition
Firearm wound - close contact
Term
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Definition
Firearm wound - loose contact range, cornea of soot
Term
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Definition
Firearm wound - contact mark size of barrel
Term
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Definition
Firearm wound - contact w/ stellate pattern, b/c entry over bone
Term
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Definition
Firearm wound - pattern from contact wound
Term
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Definition
Firearm - bullet fragments from contact wounds
Term
Graze Wounds
Definition
Caused by bullet which touches but does not enter skin
Term
Bullet Fragments from Contact Wounds
Definition
Bullets are made to expand; sometimes fragments come out exit wound
Term
Knockdown Pattern of Bullet
Definition
Slow bullet enters skin, expands & stops perp from aggressing
Term
Keyhole Entrance Wounds
Definition
Bullet tumbles, ricochets off other objects & either the side/back of bullet enters body - wounds not symmetrical
Term
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Definition
Firearm wound - graze wound
Term
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Definition
Firearm wound - keyhole wound
Term
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Definition
Firearm wound - entry wound
Term
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Definition
Firearm wound - exit wound
Term
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Definition
Firearm wound - multiple bullet exit wounds
Term
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Definition
Firearm wound - shotgun wounds
Term
Entry Wounds
Definition
Potentially soot, stippling & abrasion margin present
Term
Exit Wounds
Definition
Bullet slows down, injury shows characteristics of blunt force trauma larcerations, skin flaps, no clean edges
Term
Shotgun Wounds
Definition
Different patterns than handgun wounds, multiple shots, close together
Term
Primary Focus of Investigation
Definition
1. Is wound produced by handgun, rifle, shotgun? 2. Is weapon at scene? Type & caliber? 3. # of injuries noted vs. # of shots fired
Term
Investigation at ME's Office
Definition
1. Identify # and location of wounds; 2. Identify entry & exit wounds; 3. Range of fire - distant, intermediate, close, contact; 4. Trajectory of bullet's path
Term
Scene Investigation
Definition
1. Identify essential info; 2. Identify exact time decedent found, when last known to be alive, describe building/room/place where found; 3. Detail all articles pertaining to incident which are present at scene