Pathology 4500B Lecture Notes - Lecture 9: Stab Wound, Structural Integrity And Failure, List Of Internet Phenomena
15 Oct 2018
School
Department
Course
Professor
Document Summary
The pathologist and firearm wounds: range estimation, recovery/identification of projectiles, wound tract/trajectory analysis, autopsy: stable, wound position relative to body, reality: dynamic, moving back and forth, shifting of body positions, determine organ damaged by firearm, cause of death. Picture: shotgun injury: entry wounds by shotguns are much larger than bullet wounds, gunshot by handgun/rifle, soot deposition at wound; pellets seen in chest in x-ray, billiard-ball effect: once pellet enter body, they spread apart. Picture: wadding recovered from scene: shotguns do not leave marks because they have smooth barrels, however, can retrieve wadding reflects age of the shotgun. Ke = 1/2mv^2: double velocity quadruple kinetic energy, energy dispersal: physical properties of projectile (deformation, tumbling) and target (elasticity, certain tissue will be more damaged than others. Picture: low velocity bullet fired into gelatin: temporary cavity energy dispersal, permanent cavity wound track. Picture: low velocity projectile (. 22: hit vital organ (brain) death.
