Mechanical Injuries — Flashcards

Flashcard 1: The main mechanism of damage in a rifled gun is?_____

Answer: Stretch mechanism or Temporary Tract

Flashcard 2: Shotgun entry wounds: _____ is seen up to 30 cm, while Tattooing is seen up to 1-2 m.

Answer: Soot soiling

Flashcard 3: Marshall's triad of blast injuries includes Punctate _____, bruises and abrasions.

Answer: lacerations

Flashcard 4: In an artificial bruise, blisters are _____

Answer: present

Flashcard 5: Multiple linear incised wounds on the inner side (_____ border) of the forearm of a homicide victim is suggestive of a defence wound in case of a attack by a sharp weapon

Answer: ulnar

Flashcard 6: The phenomenon where the long axis of a bullet deviates from its path of flight (trajectory) is known as:

Answer: Yawing

Extra: Yaw refers to the deviation of the long axis of a bullet from its line of flight (trajectory). As yaw increases, the bullet may eventually "tumble" (rotate 180 degrees). Yawing increases air resistance and can lead to larger or more irregular entry wounds.

Flashcard 7: When the skin surface is struck by a rod or rectangular sectioned object such as a cane or lath, the consequent bruising may be of the _____ or railway line type.

Answer: tram-line

Flashcard 8: _____ of gunshot wound is because of peppering of skin with unburnt/partially burnt gunpowder

Answer: Tattooing

Flashcard 9: The following phenomenon describes _____ of bullet

Answer: yawing

Flashcard 10: Classify mechanical injuries based on the type of weapon used.

Answer: 1. **Blunt force**: Abrasion, Contusion, Laceration, Fracture 2. **Sharp-edged weapon**: Incised wound 3. **Heavy sharp-edged weapon**: Chop wound 4. **Pointed weapon**: Stab (Punctured) wound 5. **Firearms**: Gunshot wound