What is back spatter in the context of gunshot wounds?

Back spatter refers to the blood that is directed back towards the shooter or the source of the gunshot when a bullet strikes a victim. This phenomenon typically occurs when a bullet penetrates a body, creating a pressure wave that forces blood and bodily fluids away from the wound. Some of this expelled material travels in the direction of the bullet's origin, which is why it is characterized as "back" spatter.

Understanding this term is crucial in forensic investigations, as it helps technicians determine the positioning of both the shooter and victim during the incident, providing valuable insights into the dynamics of the shooting. It also assists in reconstructing the crime scene, which can be essential for evidence presentation in court. Recognizing the physical behavior of blood at the scene is vital for establishing key details of the event, including the angle of firing and the distance between the shooter and the victim.