Key Bloodstain Pattern Analysis Terms Flashcards
The large pattern of blood that is created when blood escapes an artery under pressure; the increase and decrease in blood pressure is apparent.
Arterial Gushing
The angle at which a blood droplet strikes a surface.
Angle of Impact
Large patters created under pressure, but with less volume and usually more distributive evidence of blood pressure rising and falling.
Arterial Spurts
A mass of blood and other contaminants caused through clotting mechanisms
Clot
Blood that has been thrown from a secondary object ( weapon or hand ) into a target other than the impact site
Cast-Off Stains
Characteristic patterns present when blood drips into standing, wet blood
Drop Patterns
Blood which is spattered onto a target, as a result of breathing; typically, this occurs when an injury is sustained to the throat, mouth, or airway
Excitatory Blood
Usually the point on the body that received the blow or applied force, from which the blood was shed
Impact Site
The point in space where the blood spatter come from
Origin
The droplet from which waterline spatter originated
Parent Drop
Blood under pressure that strikes a target
Projected Blood
Small drop of blood that break off from the parent spatter when the parent droplet strikes a target surface
Satellite Spatters
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
Shadowing/ Ghosting / Void
The pattern left when an object moves through a partially dried stain, removing part of the blood, but leaving of the outline of the stain intact
Skeletonized Stain
Bloodstains created from the application of force or energy to the area where the blood is
Spatter
The pointed edges of a stain that radiate out to form the spatter
Spines
Spatter created when a volume of blood in excess of 1 mL strikes a surface at a low to medium velocity
Splash
The transfer of blood onto a target surface by a bloody object that is usually moving laterally
Swipe
The platform created when a wet, bloody object comes in contact with a target surface, leaving a pattern, that has the features of the object making it useful for identifying the object
Transfer Pattern
The surface where the blood ends up
Target
Pattern created when a secondary target moves through an existing wet blood stain on some other object
Wipe
