BloodStainwkst

B l oo d s t a i n S c i e n c e Name Khyara Martinez 1. BPA = Blood Pattern Analysis 2. What can an investigator learn from the analysis of a blood spatter? ► Type and velocity of weapon ► Number of blows ► Handedness of assailant ( right or left -handed) ► Position and movements of the victim and assailant during and after the attack ► Which wounds were inflicted first ► Type of injuries ► How long ago the crime was committed ► Whether death was immediate or delayed 3. What are several methods for detecting traces of blood at a crime scene? 4. Identify these terms associated with bloodstain pattern analysis. Spatter – Bloodstains created from the application of force to the area where the blood originated. Origin/source – The place from where the blood spatter came from or originated. Angle of impact – The angle at which a blood droplet strikes a surface. Parent drop – The droplet from which a satellite spatter originates. Satellite spatters – Small drops of blood that break off the parent spatter when the blood hits a surface. Spines – The pointed edges of a stain that radiate out form the spatter; can help determine the direction from which the blood traveled. 5. What are the basic types of bloodstain patterns? • Passive Bloodstains – Patterns created from the force of gravity – Drop, series of drops, flow patterns, blood pools , etc. • Projected Bloodstains – Patterns that occur when a force is applied to the source of the blood – Includes low, medium, or high Impact spatters, cast-off, arterial spurting, Expiratory blood blown out of the nose, mouth, or wound. • Transfer or Contact Bloodstains – The pattern created when a wet, bloody object comes in contact with a target surface; may be used to identify an object or body part . – wipe pattern from an object moving through a bloodstain or swipe pattern from an object leaving a bloodstain.