TSA Forensic Technology 54 Practice Test with answers

Passive Stains - ️️Drops, Flows, and Pools, results from gravity acting Transfer Stains - ️️object coming in contact with existing blood stains and leaving wipes, smears, or pattern transfers Impact Stains - ️️blood projecting through air and usually seen as splatters. (May also include gushes, splashes, and arterial spurts.) Gunshot Splatter - ️️Includes forward splatter from exit wound and back splatter from entrance wound. Typically: Forward is a fine mist and the back is larger, fewer drops. Cast-Off - ️️Results when an object sung in arc flings blood onto nearby surfaces. Tail points in direction of motion and the number of arcs can show minimum number of blows. Arterial Spray - ️️Spurt of blood when a major artery is severed with new pattern created each time the heart pumps Expired Splatter - ️️blood from an internal injury mixing with air from lungs being expelled through the nose, mouth, or an injury to airways or lungs, forms a very fine mist and some blood stains are latent. Sharp Force Injuries (Stabbing) - ️️Less blood being deposited on the instrument, smaller more linear patterns of stains Blunt Force Injuries (Hitting or Beating) - ️️larger surface area will collect more blood, producing drops of various sizes.