UPSC Exam > UPSC Notes > Medical Science Optional Notes for UPSC > Firearm Entry vs Exit wound
Firearm Entry vs Exit wound | Medical Science Optional Notes for UPSC PDF Download
Definitions
Tattooing (peppering/stippling): Tiny, distinct black specks resistant to removal, resulting from the embedding of gunpowder grains into the skin.
Blackening/Smudging/fouling: The presence of carbonaceous deposits on the skin that can be easily wiped away, originating from the accumulation of smoke on the skin.
Lead ring/Metal ring: The deposition of minute amounts of lead at the projectile's entry point, derived from bullet lubrication, gun oil, lead surface residue, and dirt carried on the bullet.
Abrasion collar: Skin abrasion surrounding a wound caused by the rotating bullet's friction against the inverted epidermis and the bullet's heat.
Contusion collar: An abraded collar exhibiting contusion, also known as a "contusion collar."
Grease collar/Dirt collar: The transportation of firearm barrel lubricant onto the projectile's surface.
Scorching, singeing (burning): Resulting from exposure to flames.
Fouling: Denotes minuscule lesions around the entry wound caused by metal fragments (from missiles or the barrel interior) expelled during discharge, resistant to wiping.
Back spatter: In contact shots, the muzzle blast and negative pressure in the barrel may draw blood, hair, tissue fragments, and cloth fibers several centimeters back into the barrel, referred to as "back spatter."
Fire arm-Entry vs Exit Wound
Estimation of Distance of Fire arm injury
Question for Firearm Entry vs Exit woundTry yourself: What is the term used to describe the presence of carbonaceous deposits on the skin that can be easily wiped away?View Solution
Firearm Entry vs Exit wound-Repeats
- How will you differentiate an Entry Wound from an Exit Wound (1995)?
- How will you differentiate an entry wound from an exit wound in case of a firearm injury? (1999)
- Describe the features of the entry wound by a bullet fired, from a rifle. Mention the differentiating features of an entry and exit wound caused by a rifled firearm (2003).
- Describe the features of contact wound by a rifled firearm. How will you differentiate entry and exit wound in a distant fire (2007)?
- A young person ol 25 years has sustained smooth barrel shotgun firearm injury on right side of chest. How will you establish on clinical examination the entry wound and distance of fire? (2015)
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FAQs on Firearm Entry vs Exit wound - Medical Science Optional Notes for UPSC
| 1. What is a firearm entry vs exit wound? |  |
Ans. A firearm entry wound refers to the point where a bullet enters the body, while an exit wound is the point where the bullet exits the body. These wounds can help forensic experts determine the direction and trajectory of the bullet, as well as provide insights into the type of firearm used.
| 2. How can the estimation of distance of a firearm injury be determined? | |
Ans. The estimation of the distance of a firearm injury can be determined through various factors. These include the size and shape of the gunshot residue pattern, the presence of soot or stippling around the wound, and the type of firearm and ammunition used. Forensic experts analyze these factors to approximate the distance between the firearm and the victim.
| 3. What are the characteristics of a firearm entry wound? | |
Ans. Firearm entry wounds typically have a smaller diameter compared to exit wounds. They may also show signs of abrasion or tearing around the edges, known as abrasion rings. The appearance of these wounds can vary depending on the distance from which the firearm was discharged and the type of ammunition used.
| 4. How are firearm exit wounds different from entry wounds? | |
Ans. Firearm exit wounds are generally larger in diameter compared to entry wounds. They may exhibit irregular edges and be surrounded by tearing or beveling of the skin. The appearance of exit wounds can provide valuable information for forensic experts in determining the angle and direction of the bullet's path.
| 5. Why is it important to analyze firearm entry and exit wounds in forensic investigations? | |
Ans. Analyzing firearm entry and exit wounds is crucial in forensic investigations as it helps in reconstructing the events surrounding a shooting. By examining the characteristics of these wounds, experts can determine the type of firearm used, the distance from which the shot was fired, and the potential trajectory of the bullet. This information is valuable in criminal investigations and can aid in identifying the shooter and establishing the sequence of events.
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Dec 04, 2024 Last updated |
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