forensics blood

target

surface where the blood ends up

clot

a mass of blood and other contaminants caused thru clotting mechanisms

impact site

point on body that received a blow in which blood was shed

projected blood

blood under pressure that strikes a target

spines

pointed edges of a stain that radiate to form a splatter

angle of impact

angle at which blood strikes a target surface

cast off stains

blood that has been thrown from a secondary object

splash

created when a volume of blood in excess of 1ml strikes a surface at low velocity

spatter

bloodstains created from the application of force or energy to an area where there is blood

arterial gushing

A large pattern of blood is created when blood escapes an artery under pressure; rise and fall of blood pressure is apparent

drop patterns

characteristic patterns present when blood drips into standing, wet blood

shadowing/ghosting/void

area in question lacks blood even though areas surrounding it show blood

parent drop

droplet from which satellite spatter originated

origin

place in space where blood came from

swipe

transfer of blood onto a target surface by a bloody object that is usually moving laterally

wipe

pattern created when a secondary object moves through an existing wet blood stain

expiratory blood

blood spattered as a result of breathing

satellite spatter

small drops of blood that breaks off from the parent spatter when the parent droplet strikes a surface

arterial spurts

large patterns under pressure from an artery, but with less volume distinct rises and falls of blood pressure

skeletonized stain

pattern left when an object moves through a partially dried stain

transfer pattern

pattern created when a wet bloody object comes in contact with a target leaving a pattern