Fragmentation occurs when pieces of the explosive device or its container come apart and are driven outward from the center of the blast. Shrapnel may be added to the device to increase the number of projectiles created by the blast. Shrapnel includes nails, marbles, ball bearings, or other materials placed in and around the device.
Explosions
Billing
Anal tags
Body packing
Dermatologic nomenclature
Formulas
LLSA Readings 
Perianal block