Term
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Definition
| Blood has been dispersed as result of force applied to a source of blood - gravity is main source used to analyze blood |
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Term
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Definition
| Often characteristic of nature of forces which created them |
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Term
| Info Bloodstain Evidence Can Provide |
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Definition
| Position of victim at time of injury, weapon used, movement of victim, removal of body, storage of body, positional rel of victim to assailant, amount of blood loss |
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Term
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Definition
| Blood accounts for 8% of total body weight; 5-6 liters in males, 4-5 liters in females; 40% blood volume loss is required to produce death |
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Term
| Factors of Pattern Analysis |
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Definition
| Volume, directionality, motion & movement, surface & texture, pressure, force, smudging & smearing, velocity |
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Term
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Definition
| Pointed or elongated stains which radiate away from central area of bloodstain |
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Term
| Satellites/Satellite Spatter |
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Definition
| Small droplets around spine as result of blood impacting target surface |
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Term
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Definition
| Circular - droplet strikes surface at 90 degrees; elongated or teardrop shape - blood strikes surface at angle less than 90 degrees |
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Term
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Definition
| Falling or dripping; created or formed by force of gravity acting alone |
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Term
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Definition
| Contact stains; created when wet, bloody surface comes in contact w/ secondary surface - may observe recognizable image of portion of original surface in pattern (example: bloody hand or shoe print) |
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Term
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Definition
| Created when exposed blood source is subjected to action or force, greater than force of gravity |
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Term
| Projected Bloodstain Considerations |
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Definition
| Size, shape - more force the smaller, # of resulting stains will depend on amount of force utilized to strike blood source |
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Term
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Definition
| Projected bloodstain - from swing of object that came in contact w/ source; cessation - object comes to stop |
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Term
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Definition
| Created when blood source receives blow or force resulting in random dispersion of smaller spatter - low, medium, high velocity |
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Term
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Definition
| Large amount of blood comes out of small opening, spurted out by pressure; if hit in artery, every time heart beats, blood is spurted out - subsequent heart beats have less pressure |
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Term
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Definition
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Term
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Definition
| Blood spatter - satellites |
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Term
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Definition
| Blood spatter - secondary spatter |
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Term
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Definition
| Blood spatter - circular (directionality) |
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Term
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Definition
| Blood spatter - teardrop (directionality) |
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Term
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Definition
| Blood spatter - passive, falling or dripping 90 degrees above stain |
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Term
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Definition
| Blood spatter - passive, actual scene |
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Term
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Definition
| Blood spatter - transfer, contact stain |
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Term
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Definition
| Blood spatter - transfer, contact stain |
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Term
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Definition
| Blood spatter - projected |
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Term
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Definition
| Blood spatter - projected, cast-off |
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Term
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Definition
| Blood spatter - projected, arterial spurt/gush |
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Term
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Definition
| Blood spatter - projected, spurt actual scene |
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Term
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Definition
| Blood spatter - impact spatter, low velocity |
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Term
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Definition
| Blood spatter - impact spatter, medium velocity |
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Term
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Definition
| Blood spatter - impact spatter, high velocity |
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